Trump protesters and supporters in Bethpage, NY

As the 7pm Trump rally in Grumman Studios in Bethpage, Long Island started, Trump supporters who apparently didn't make it inside started amassing behind the anti-Trump protesters (around 400) who had been gathering for hours. Yelling back and forth escalated and police quickly put barricades between the groups. I didn't see any violence, but the back and forth continued until about 8pm, when the police riot squad entered the space between (next video).