A new complaint requests that the federal government investigate the tax-exempt status of a left-wing nonprofit that has allegedly fomented violent riots. The Center to Advance Security in America (CASA) filed the complaint Tuesday morning with the IRS seeking an investigation into People’s Forum, Inc., a New York-based Nongovernmental Organization (NGO) linked to socialist megadonor Neville Roy Singham. CASA’s complaint alleges that People’s Forum routinely organizes and funds protests that engage in illegal activity. "People's Forum Inc. is the tax-exempt fiscal sponsor of many progressive and radical organizations, including the Venceremos Brigade, which engage in demonstrations often crossing the threshold...