That's absurd. You do not have a responsibility to commit suicide by cop just because you might end a few tyrants. Violent means rarely have the desired effect. Often they make things worse.
Larken is doing a very good job of educating those willing to have their beliefs challenged (and encouraging those of us in the choir). I'd rather he stayed alive to continue doing that.
Violence is not the only way. I don't expect anyone to just lay back and take it; self defense is justified. But if enough of us just say no, and are willing and able to defend that no, there's nothing they can do about it. Very little actual violence will be necessary.