Labour MP for Camberwell and Peckham Harriet Harman describes how "shocked" and "horrified" the local community are by the four murders in Bermondsey early on Monday morning. She calls upon those with information to come forward and "give it to the police". Report by Edwardst. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn