The demographics and housing situation in the capital force rich, poor, black, brown and white to live cheek-by-jowel. In east London, you find gay fashion-addicted hipster couples, burka-clad Bangladeshis and middle-aged media types living in the same streets. They might not be the best of friends; but watching people who look very different from you bringing home their shopping and taking their kids to school humanises them, and makes rabid bigotry absurd.