The comedy show at a New Jersey arts center abruptly canceled Thursday night due to security concerns by local officials was scheduled to feature the founder of the Proud Boys, which has been labeled a “general hate” group by the Southern Poverty Law Center. In a statement Thursday, Rutherford Mayor Frank Nunziato said an event at the Williams Center had been shut down after “online intelligence led the police department to believe that the event had potential for confrontation.” He did not specify the event Gavin McInnes, the Proud Boys founder, told NJ Advance Media the event was part of his…