Several recent racially-motivated attacks against Somali immigrants in Rochester have shaken the city's image as one of the best places to live in America. Citizens have responded by signing pledges of non-violence and businesses have donated thousands of dollars to a fund to help police catch the attackers. Much of the racial tension in Rochester shows up in the community's young people. Minnesota Public Radio's Brent Wolfe prepared this report on why racism is surfacing among teenagers and what the schools are doing about it.