Apparently it's become something of a problem out there - to the extent that a lot of decent Prague citizens won't go to Sparta games any more.

There's even a Czech hooligans website, which glorifies murder and features a gallery of pictures taken in Copenhagen (but not in the stadium, if you get our drift). We're not going to link to it but the URL is guessable.

We don't want to scare anyone, and we've no reason to suppose that the problem of Czech hooligans is anything like as bad as that in Turkey. But if it's not too late: be warned, be careful.

Monkey noises are to be expected. They don't get to see many black players in Prague, there's only a handful in their league.