His argument was that we shouldn't disarm just because evil exists and guns can be mis-used. Using that as a way to suggest his death is justified or whatever people are implying is just gross and disgusting. Dude was 31 years old and had 2 young kids and simply went and talked to people. He was assassinated in front of his family for nothing more than talking. Nothing that he ever did was even close to deserving violence. If people can't take someone politely debating their ideas, then they're a whiny entitled baby and they're the problem.