We need cameras on the ground to confirm stories like this. Hopefully, next time we’ll have photographic evidence.
People have smart phones. They need to use them to record events as they happen.
What’s really needed is a much bigger pro-Israel demonstration in the same town, only this time the assembled should be armed with smart phones and small weapons that can be concealed on their person and ditched in a hurry. I hope somebody in Chicago has the connections, abilities and will to do just that. But I doubt it will happen.