At least 20 Indian/Bangladeshi were taken out of the lower tier, after one cheered when Chelsea took the lead, the one next to him was more restrained but clearly supporting Chelsea, so we got the stewards over, and asked them to remove them for their own safety. Senior stewards, then the police got involved, and after about 20 minutes they came over and asked them to leave, instead of just the two we highlighted, about 20-30 left, leaving 2 or 3 empty rows of seats. These seats were clearly sold to some kind of 'tour' (there appeared to be a tour guide bloke with them in charge) as a block, how do away fan tickets get sold like that ?