As I was at the other end of the ground, I can't say that I noticed anything. However what I do say is that they should be banned from allowing their fans to travel to any away ground for 3seasons and made to pay for the damage. I think that the police did not want to throw anyone out because it may have started a riot, and they at all costs did not want that to happen.
We have all seen what happens when the police fail to stop football fans from behaving badly. I hope that that does not happen when the Atlanta fans come next time.