The Aam Aadmi Party on Thursday hit out at its former leader Kumar Vishwas over a video in which he was heard accusing party convenor Arvind Kejriwal of supporting Khalistani separatists in Punjab and called it a "pre-planned vicious propaganda." AAP leader Raghav Chadha slammed Vishwas for defaming and mocking Kejriwal and questioned why he hadn't made these claims public before.