Yep, they've already shown that antifa agitators were in the crowd, disguised as Trump supporters. People said that the real supporters were trying to stop them from smashing windows. Then the police let them in, and then the "conservatives" who said that they would support Trump but planned on stabbing him in the back used the "violence" as their excuse for going back on their word. Planned from the start, and unfortunately the good guys fell for the trap.