Has his campaign ever gotten a license to use a song prior to using it? At some point the recording industry as a whole should ask for an injunction against them.
Ice Cube - Worked on the Trump campaign until it caused bad press but justified it by saying Black people have to work with Republicans if they want equality
Is it significant, statistically or otherwise, that 2/5ths of the named people (not counting the linked list b/c I'm lazy) are either certifiably insane or confirmed pederasts? (both in one case?)
If you told me that Kennedy shared his brain worm with Kanye, I'd not be the least surprised: "yeah, that tracks."
My understanding is that a generic public music performance licence generally covers the use of pretty much any song played in any venue for any reason. I wouldn't doubt they purchased such a licence because it's fairly cheap.
However, there is legal precedent that tying the artist to a message they don't like isn't part of that general public performance licence. It's recommended that, if the event is going to be religious or political, the organizers get confirmation from the artist that they're alright with it to avoid a lawsuit. I highly doubt they're doing this.
Edit: apparently the song was used in a video and not just played at a rally. That's way different. They definitely just stole the song