Figure there's more to this than the article lets on, if this is a chant that's being heard around the stadium and only one arrest has been made then I highly doubt they just picked out the guy who was singing it closest to a police officer or whatever.

Don't think someone should be arrested for chanting and I think it is pretty... unpleasant how certain groups and certain chants get condemned whereas others just kinda get left, it's an ugly line to be drawing, but I'd be amazed if all this guy was doing was joining in the chant.