Modern Britain is a multiracial country, but we must never become a multicultural one where shared values disappear and people withdraw into separate worlds. Learning less about each other, trusting less, and fearing more; when that happens, suspicion turns into resentment, and resentment into hate. Some people push these divisions for retweets, likes…even votes. They think it is harmless but we saw its extreme form in Manchester this week when a home grown terrorist decided to kill British Jews