You do know there are left wing people out there who own guns and go to the range, right? Because when them nationalists show up in their leather boots, knocking on doors, they won't give a damn if you're a pacificist. They gonna go pop-pop-pop.
Learn from the black panthers. If proliferation of guns is the standard, abstaining will only make you - and your children - a juicier target.
But, even if you're anti-guns, there's one more thing.
One talking point you could use with pro-gun people though, even if you're anti-gun...
"So let me get this straight... you're against the government taking away your guns, but for the government taking away your encryption?"