The mentality of the AntiFa types and their ilk is a very serious threat. They think that they're saving the "world" and failure means horrible suffering and death. They approach their mission with an ends justify the means attitude and that anyone not in lock step with them is expendable.
Then on top of all that, they don't understand violence and the harm their actions can cause. Just look at the case of Marquise Love, he could have easily killed Adam Haner and thought that his actions were justifiable defense. There's no respect for the weight of violence and lethal force.
Look up the video "Meet the pyro" on Youtube, from the video game Team Fortress 2. Without sarcasm, it shows how those people think of violence.
