Unknown assailants attacked Bharatiya Janata Yuva Morcha motorcycle rally in Kolkata, when the group was commemorating birth anniversary of Swami Vivekananda on Friday. The assailants allegedly hurled home-made grenades on the bikes of the BJYM workers leaving few of them injured. BJYM workers alleged Trinamool Congress members behind the attacks. BJYM President got severely injured in the incident. High Court Observer’s car was also vandalized in the incident. BJP is trying to make it presence felt in the eastern state. Watch this video to know more about the news.