I have no information about what happened to you, but I DO have a little story about my brother-in-law when he was staying with his sister in California.

He and my sister had gone down to Mexico for a few days, he was taking cine film (there weren't video cams in those days lol). Suddenly two men approached him and demanded his camera from him. The said they were plain clothes policemen and showed him their ID cards.

He refused and so they marched him to the police station where he was held for several hours without being allowed to call either his wife OR the British Embassy.

Eventually they released him after he continued to hand over the film.

He ran it through when he got home to see what all the kerfuffle was about. Unwittingly he had taken film of a policeman accepting a bribe from a car driver who had committed a traffic offence.

I wonder what YOUR police car was doing ;o)