Organisation named Nataka Thiraipada Nadigarkal Madurai [NTNM] sent letters to Vishal, Sivakumar, Santhanam and Nassar that stated threat to the actors lives for participating in Nadigar Sangam issues.
In concern to their support for issues related to Nadigar Sangam, Four Tamil actors have received individual letters. They were warned with severe consequences if they involve in any such Nadigar Sangam affairs there after.
Remember, Kollywood stars supported Kamal Haasan’s Vishwaroopam release and Vishal was first among them. Apparently, Nadigar Sangam called for an explanation from Vishal for supporting the cause, which ended up with a compromise between both the parties.