Congress leader Digvijaya Singh on Monday attacked the Samajwadi Party for bringing a "communal" Shahi Imam of Delhi's Jama Masjid to share a platform "for petty political gains" and said Anna Hazare believes in violence. Singh said on Monday that the Shahi Imam, Maulana Ahmed Bukhari, is "a man of communal temperament", and that he "even glorified terror icon Osama bin Laden''.