Came to post the same thing, loads of cheers for him as he does it and as he is taken off the pitch. I'm sure if some doylem did something similar at SJP some would cheer but I'd hope the majority would not be so stupid. Cheering a fan attacking a player is a total joke. Birmingham should have to play a number of games behind closed doors at least for this, not sure what sanctions the rules allow regarding points deductions etc.
Different scenario because it wasnt one of our fans, but made me think of that Leeds fan who ran onto the pitch a couple of years ago from the gallowgate. Seem to remember our fans giving him a smack as the stewards dragged him out, I'm sure they'd do similar if it was a Newcastle fan.