lets be realistic about this..... that 75year old walked towards a line of police that were advancing in his direction. There were no other protestors anywhere in sight, they had all backed off and this guy goes up to the cops. They push him, he trips and falls. His actions were totally weird... And an advancing line of police trying to clear the area are not going to stand there a have a nice conversation with the man... and sure as hell theyre not going to let him get behind them and let him stay there Thats how they clear areas/