One SOB once stole 20 eur from me in Spain. I never lost my mind the way I did back then. We were only 3 and the English were like 20-25. We were gonna be destroyed to pieces for sure, but I kept insisting on arguing and fighting.
The hotel security had to throw the three of us out.
It had nothing to do with football though. The English were there for a bachelor party and they were drunk as hell.
Later we made friends with most of them. It was close before ManU-Chelsea CL final and they all supported ManU.