It was shut down because Frankenstein was not prepared to face the monster of his own creation.
This morning both Marco Rubio and Ted Cruz were making political points by blaming this on Trump and reminding people that this ONLY happens at Trump rallies.
So the question to ask is "Has Donald Trump FINALLY gone too far? Or will this too have no real impact on his campaign?"
Meanwhile, let's review why Trump himself is the cause of the violence at his rallies. Here's a a video timeline of Trump inciting violence over and over and over.