Society-at-large, has escalated from verbal insults against political supporters, to street violence against political supporters, and has now escalated to violence against politicians.

Trump rallies, became associated with verbal insults & physical violence, against Trump supporters.

It seems that a new generation, has taken physical violence to the streets, and everyone is now a target, for their wrath.  Verbal insults were not enough.

It strongly looks like, politicians who voted for anything Trump, are now subject to physical violence.

Weapons, are not the problem.  People, are the problem.