Stepping up its attack on the PM Narendra Modi government over the Hindenburg Research's allegations against SEBI chairperson Madhabi Buch, the Congress on Monday threatened to launch a nationwide protest if its demand for a JPC (Joint Parliamentary Committee) probe into the matter is not accepted. AICC general secretary (Organisation), K C Venugopal, described the allegations as "very serious" and accused the Prime Minister of supporting Adani on the matter. "The Prime Minister's silence on the matter amounts to a destruction of credibility," Venugopal told reporters at the airport here. He accused the union government of trying to divert people's attention from the matter by using the Enforcement Directorate against Rahul Gandhi, the Leader of the Opposition in the Lok Sabha. "Don't try to threaten Rahul Gandhi with an ED notice. We will strongly oppose such diversionary tactics," the Alappuzha MP said. Venugopal said that "this is the most serious issue in the country" and warn