Much of WB and India is revolted by the alleged police killing of CPM activist Sudipto Gupta and there're putting the blame squarely on the culture of violence spread by Mamata Bannerjee. The TMC's Dereck O'Brien spoke to NewsX to defend his party.<br /><br />For more log on to http://www.newsx.com<br />Follow NewsX on Facebook at https://www.facebook.com/Newsxonline
