There is always the concern of writing a blog post like mine and having some nutjob interpret it mentally some way and ending up with something like what happened today.
Arbitrary shooting due to group affiliation does nothing. If anything it can give them more power. Those guys are certainly not the heads of the Hydra. You must look for the people and families who persist regardless of the president is and congress. Yet as I stated it is stupid to do anyway if you don't have a way to stop another head from just growing in its place.
Politicians are mere pawns. One of the reasons i defend Merkel, people who actually think that elected leaders lead the world are kind of ridiculous. Even Putin needs to make deals with the hydra.
I hope it is clear that being ready to use violence does not mean gunning some people down in the street or violent protest. In the long gone past many wars/rebellions were "violent" but without or only little blood. If an army sees it is outmatched 10:1 then it would just surrender. In equal fights you often had representatives fighting, ie David vs Goliath.