Let me reiterate. Violence is not the answer for one reason and one reason only. Once it starts and everyone joins, it will be very, very hard to stop.
edit: be
In the past year-or-so we have seen two assassination attempts on Donald Trump, the assassination of the CEO of an insurance company, the assassination of Rep. Hortman, and now this. That's five political assassinations/attempts in a year.
It would seem fair to argue we are now firmly in a state of contagion which is unlike the situation in 2012 when Giffords was shot.