Nice deflection. You didn't answer the question I posed, you answered your own. You post daily about how Trump is a tyrant and is responsible for a wave of political violence due to his rhetoric, a premise that I disagree with, but am not arguing with this question. By the logic of your premise Bernie Sanders is responsible for the actions of James Hotchkinson. In your deflection you reduced the responsibility not to Bernie but to the individual "extremist", which is a premise I agree with.
There are crazy people out in the world and they will do crazy things inspired by the demons in their heads that latch onto any fragment of reality they can. Jodie Foster isn't responsible for the actions of the guy who shot Reagan, Trump is not responsible for this guy who attacked Paul Pelosi, and Bernie is not responsible for James Hotchkinson. Now when people fundraise and provide material support, like our Vice President raising bail money for BLM rioters, that's a different story.