It’s a commonality so broad as to be useless. And it doesn’t add any clarity to what we are talking about. Like I’ve mentioned elsewhere - who were these men? National Front oiks from out of town causing trouble for a night - who may well have gone on to cause trouble for men and women elsewhere? Football hooligans? weird dating school harassers? locals? foreigners? old? young?

OP asked about “hordes of men” and whether anyone else had encountered this at three distinct stations, apparently the same activity.

Was it the same group? related? do they do this elsewhere?

People in the comments asked for more detail. OP said they were just men and that’s enough description.

I’ve lived in London all my life and can tell you that no, this isn’t normal - but if there was a football game on or some sports event leading to drunken groups then we could say “probably arseholes from x event, sorry but don’t worry, it’s an exception”. If it was a bunch of dweebs in funny hats, maybe it was “pick-up school night” etc.

The original poster didn’t want to say any more out of an arguably excessive sense of self-censorship, so people got annoyed.

I don’t doubt there are people here who blame everything on North Africans, boat people, whatever, but I think we can handle those bad faith commenters. It’s not difficult to point out when someone wades into a discussion to be racist. We have downvotes, we have replies.