It is just too coincidental that this incident was fabricated a day ahead of the Chicago disruption. Media creates memes and this is what was happening here. The media knew about the upcoming Chicago disruption and found a way for it to further their meme that Trump and his campaign were mean violent guys. The three small men on the stage picked up the meme. The leftists created the catalyst, the media laid the groundwork with a fake story, and the GOPe tried to use it to their advantage.
We do know that Terris needed this for a piece he was already working on. I guess the Chicago disruption / mini-riot does play into it.