Violence from the left against anything that smacks of being politically incorrect is a growing phenomenon. Violence on campus is just one of the many examples of this. Pro-Israel students have been clearly targeted as have supporters of President Trump. Those who are looking to shut down free speech have totalitarian tendencies, and violence and totalitarianism go hand-in-hand.
What is perhaps so troubling about the shooter of the Republican lawmakers is that this deranged killer may very well have been a radicalized leftist who was impacted enormously by the media.
The solution is probably not to ban free speech, but to tone down rhetoric all around – especially anti-free speech rhetoric from the left.