What has the PSL done differently than other leftist organisations in the U.S. ,and the west more generally, that has allowed them to be so successful?

Short Answer: Marxism-Leninism

Long Answer:

Extreme endurance on the part of the organizers, who began at a time when the US was in even more of a counterrevolutionary period and things would have reasonably seemed hopeless for socialist organizers.

In addition, being mild in manner but radical in material, and instead of being abrasive and ultra-left in ways that alienate people, instead focusing on being approachable while bringing in radical politics.

Finally, the movement for Palestine in the US has been in huge parts brought forward by them and allied groups. By advocating for Palestine for decades in what was originally an unpopular position, being consistent in their support for Palestine for decades meant that they were well equipped to help rise and be risen by the movements for Palestine in the U.S.

Also it should be mentioned that the party's active practice of Democratic centralism gives them the ability to engage with these things on a national scale. While I have much love for many of the DSA Members I know, the DSA suffers from it's association with Bernie Sanders and the liberal party who do not reciprocate this support; and it's a very decentralized organization which means that many branches do not work together or follow national's lead the same way that PSL branches do.

The explanations in here are correct, but another very important one that hasnt come up is the candidacy program. After a fairly lengthy onboarding process, members are brought in on a provisional status called "candidacy". That lasts about a year and is a focused period of training on Marxism, history, political analysis, rhetoric, and a ton of practical organizing skills. That includes a nine-month biweekly class deep diving into subjects like the USSR, national liberation, the PRC, and the history of revolutionary movements in the US. By the time someone finishes candidacy, they should be a well trained and educated revolutionary committed to our political line.

I've attributed their success to three things. They aggressively weed out any potential cops or feds. I've never seen any organization take it this seriously. If they even catch a whiff of cop on you, then you're out.

The second part of it is probably money. Party dues are very high compared to other orgs, so they have a bunch of money to work with.

Third is how willing they are to work with other groups. I know PSL and Marxist orgs in general have a reputation for being rigid and controlling, but that hasn't been my impression at all. Branches are frequently in coalition with other local groups, like my local PSL coordinates with Mexico's MORENA and several indigenous/latino groups.

It's the work they put in. These days Palestinian solidarity is cool among the youth and left and protests are regular. But 10, 20, 30 years ago? Not as much. When something big happened in regards to that or any other big issue PSL and their sister/front group ANSWER were all over it organizing demonstrations. I'd see their people out there bringing signs and leading. Their members become known as people who get the organizing done among those who are active in the leftist ecosystem. Suddenly, ideological differences start to soften because they are the people actually out there making things happen.

Are they that big? I'm not sure if they're household names yet, are they? I hear about them on spaces like this, but not in wider, more liberal spaces yet (like Reddit, YouTube, mainstream media).

EDIT: But accepting the premise of the post, I bet it's democratic centralism. I think it's one marked difference between them and DSA, which is bigger but as I understand it each chapter is a lot more independent.

I think PSL's winning ticket is neither the Presidential campaign nor the educational content. Other parties do those and aren't nearly as large or popular.

I think what PSL does well theoretically and practically is address intersectional issues and decolonization, anti-racism, and so on, which are the order of the day. Most PSL people I see, and this may just be good propaganda, are non-White and this tells me that they are effectively reaching out to POC communities and comrades in ways others aren't. Let me drop some older, experiential knowledge.

DSA, ISO, even anarchist circles, etc. have always had a White leadership and racism problem. Some organizations, like ISO (Trot, I know), would even dismiss the importance of racial, decolonial questions as "identity politics" that they didn't get involved with. Many were and are class reductionists that only want to discuss the problems of the proletariat, which of course includes cishet White men as a default. This can feel not only dogmatic but incorrect to comrades or potential comrades who don't have the luxury of keeping an issue in the abstract because they live it daily.

Rewind the clock 15 years ago, and, I'm sorry to say, no one really gave a fuck about Black people or decolonial struggles generally. No one even really cared about using slurs or making racist jokes or comments. Precious few cared to even carry it as a real issue, even among Left spaces as BLM was starting. Obama was seen as having resolved racism in the country, not a joke nor hyperbole on my part. It rubbed White men the wrong way to be on the other side of history and critique, which created a lot of problems in groups. Presumably, this is why Left spaces and organizations were maintained as predominantly White. It was a self-filtering, most POC didn't want to stick around to deal with that bullshit, but there was also gatekeeping of people who were seen as problems for criticizing these issues and in particular criticizing certain leaders. You can still see this play out on Hexbear, by the way.

Now, everyone likes to say and think they're allies. Parties and people want to pretend like that didn't happen and they were always anti-racist, but that's easy to say and hard to prove when there are still POC who were there and have not forgotten what happened not that long ago. You can see the same thing happen with the Democratic Party who rejected BLM when Trayvon Martin was murdered, Obama himself dismissed it, but now that BLM grew into this toothless iteration like to act like they are its champions. That shit might work on White people who want to believe they were always good, but it won't work on POC with half a brain to remember. Another example, albeit different, is how DSA handled the question of Palestine—not 15 years ago but 15 months ago!!

It seems that PSL does not have a reductionist (read, "reactionary") line. It has welcomed a lot of people who didn't feel comfortable with that shit and, unsurprisingly, feel comfortable in spaces where they are accepted and anti-racism is put into practice in a radical way. I'm not entirely sure but it seems they were practicing this since the beginning and have good credit on this to make newer people coming in feel at ease. Further, younger people are growing up already understanding intersectional issues as important and necessary to address. They don't have the same baggage from previous times. When they interact with a group like PSL, it feels like PSL has a line which matches the thought of the youth, which is critical. When younger poeple encounter other groups, it feels like walking into an irrelevant but well-preserved museum. I'm cishet but I would assume (hopefully correctly) that PSL carries intersectional thinking to its logical conclusion with regard to LGBTQ issues as well, which resonates well with the youth and those communities too. PSL rests in good theory on that front and I, personally, have a lot of respect for them in this aspect. I think that theory leads them to good practice which has led to a lot of support from these communities which previously had to stick to 'identity'-based groups, for lack of a better term. This allows PSL to grow in ways other groups aren't or are doing slowly.

I'm not a member of PSL, by the way, and have other critiques of them but this is good.

I don't think Codepink is a PSL front. PSL have been around for a while, I've followed them since they first formed from their their split with WWP . They've just been very active and consistently Anti-Imperialist in their stand, the ANSWER coalition was all over the place during the Iraq War. They are definitely the best Communist org in the belly of the beast.

DSA basically got all their momentum from the Sanders campaigns, because they were the least threatening and easily digestible for new leftists that are just waking up from their Democratic Party delusions.

My guess is they generally don't get involved with stupid infighting although I admit that's just a guess based on almost nothing

Of those "front organizations" the I only recognize is CodePink. I might have heard of People's Forum in passing and BT News doesn't even show up in google results. Even then CodePink are absolutely not a household name and seem like a sister organization. I haven't seen the PSL put forward any tactic beyond media attention. From Claudia's presidential run to showing up at protests with buckets of signs, everything the PSL seems to do is just media attention.

I'd love to be proven wrong. I'd love to see some evidence of PSL chapters supporting a union drive, or pressuring a local government to pass some policy, or some sponsoring some mutual aid effort, or any sort of direct action. I'd love there to be an ML organization that had a strategy beyond a protest to recruit burnout cycle.

What success are you talking about?

When I look at protests in the U.S., it seems so many of them are organised directly, or indirectly, by them.

Am I out of the loop on this, what?

ITT: Thinly veiled sectarianism