Questions; 
Who or what organization filed the papers for the protest to be held in that public square?
Was there a direct connection between the filing group and the extreme groups that showed up?
How did the protestors organize to include other right wing groups?
Which left wing groups attended?
How did they organize their protest of the protestors?
Was anyone paid to protest?
If yes, which organization was involved in paying them?
Who funds the groups paying the protestors?
There is a lot we don't know, but we do know that this has happened all across our country and 
if there is a pattern or groups that exist to foment violence, we need to know that and address them.