Attacks in 22 countries in this 12 year period seems pretty global.
Barf Alert. Lord Mayor of London, Red Ken will be speaking soon.
"In Leeds, around a sixth of the population is Muslim. Why aren't the streets of Leeds streaming with blood?"
Because the Muslim population is not generally engaged in anti-government activities. However it is unclear how large the untapped potential is for future bloodshed.
Recent race riots, etc. indicate that all is not right in the Muslim community in Britain. There are also indications of a significant degree of tolerance for extremism among the Muslim community.
Certainly, the streets need not "run with blood" in order to create a major social problem for Britain - potentially a much worse one than the decades-long struggle against the Irish Republican Army.