I'm not saying it was a deliberate setup, or a co-ordinated racist attack. I'm saying it might have been one or two idiots causing trouble, and it turning into something a lot nastier because of false rumours. And people's racial profiling (i.e. "those two guys look like they might be carrying knives") might well have had something to do with it. Clearly there's people on here who think that's impossible, or that you have to be an evil racist to even experience that. I disagree. I think a lot of people are overestimating how reliable eyewitness testimony is, and how people's biases play into it. Maybe that's why some people are more than happy to believe anyone who said "they've got a knife", but are outraged when someone says "no they didn't".