It's very clearly the family stand, if the structure of the ground doesn't give it away the fact they're sat down and it's filled with kids should. May seem slightly aggressive in isolation but fuck them, if you sit in the home end and aren't a home supporter in any ground you have to accept you might be thrown out. You have to show no emotion and do nothing to stand out. You do anything to indicate you're an away fan, you can expect what happened here at the bare minimum and consider yourself lucky not to get a slap. Might be a harmless tourist not clued up on how things work here but that's their fault. The guy leading the calls for them to be ejected handled it well, just enough aggression to cause enough of a scene to force the stewards who ordinarily wouldn't do anything to act. he could have been a lot more aggressive and physical if he wanted.