Activists from a regional Sikh political party push a barricade as policemen try to stop them for marching towards the U.S. embassy during a protest against Sunday's shooting at a Sikh temple in Wisconsin, U.S., in New Delhi August 6, 2012. A gunman killed six people and critically wounded three at a Sikh temple on August 5, 2012 before police shot him dead in an attack authorities are treating as an act of domestic terrorism. Authorities said a tall, bald, white man in his 40s opened fire just before services had begun, entering the kitchen at the Sikh Temple of Wisconsin in suburban Milwaukee at about 10:30 a.m. CDT (2000 IST) as women prepared a Sunday meal, sending worshippers fleeing to escape the barrage. REUTERS/Parivartan Sharma (INDIA - Tags: RELIGION SOCIETY CIVIL UNREST)