Do you think it's acceptable for policemen to curse and swear at members of the public?

Perfectly acceptable. I'd rather they cursed at me than turned the water cannons on me or sprayed tear gas - like they would in most other countries. People need to realise that they get the police force they deserve. If people treat these harbingers of law enforcement with contempt, they should expect nothing but the same in return. The very title of the doentary is insulting - Coppers? Whatever happened to calling them Policemen? As for the behaviour of one policeman in the middle of loud and unruly demonstrators - how calmly would YOU have acted if you had been there?