Launching a scathing attack on Leader of Opposition in Lok Sabha, Assam Chief Minister Himanta Biswa Sarma on Friday said that Rahul Gandhi would have to reveal his caste identity if census is conducted. He told reporters, "Earlier, Rahul Gandhi used to ask journalists about their caste. Now when people ask him about his caste, he has a problem with it. Will the caste census be conducted without asking about caste?" he asked.