The Catholic bishops of the United Kingdom are praying for peace amid rioting sparked by the murder of several schoolchildren by the son of Rwandan immigrants, saying “such violence threatens the values of our society.” The protests follow a stabbing attack at a children’s dance class in Southport, England, which left three young girls dead and nearly a dozen people injured. According to the BBC, the 17-year-old killer was born in the U.K. His parents are immigrants from Rwanda, a predominantly Christian country