Prime Minister Manmohan Singh faced opposition from a protester when he was prepared to address International Academic Conference at Vigyan Bhawan in New Delhi today. A man started shouting slogans against him and tried to disrupt the proceedings. As PM was to deliver his speech on economic reforms a man, whose identity is yet to be known, stood up and took off his shirt and started shouting slogans against Manmohan Singh. However, the security officials overpowered him and whisked him away.