It may be unpopular, but probably Millwall. Hate Arsenal out of all the club's in London, insufferable supporters a lot of them, proper divvies who only tend to support them to be fashionable, they're like southern RS, but some of their fans are ok. I'd argue there's just as much if not more idiots in City's support who stand by the a way fans goading them, and other clubs have a history of causing trouble it ain't just Millwall. The Geordies singing get your t**s out for the lads to a girl who looked about 14 outside the cabbage hall, was one of the worst things I've seen at games. I've always found Millwall, similar to Celtic and Rangers, most of their fans are ok it's just the ones who aren't are insane.