Singer/songwriter James Taylor joined mourners at slain police officer Sean Collier's memorial service in Cambridge, Massachusetts on Wednesday (24Apr13).

Taylor performed Shower the People at the sombre ceremony, which was also attended by U.S. Vice President Joe Biden.

Collier, 26, a Massachusetts Institute of Technology police officer, was killed during a confrontation with the Boston Marathon bombing suspects Tamerlan and Dzhokhar Tsarnaev on 18 April (13).