Paying sources to infiltrate hate groups is a tried-and-tested tactic long employed by federal law enforcement agencies.Show Caption Hide Caption Southern Poverty Law Center indicted on fraud and money laundering chargesThe Justice Department announces an indictment accusing the Southern Poverty Law Center of fraud and funding extremist groups.On Tuesday afternoon, the country’s top law enforcement officials, FBI Director Kash Patel and acting United States Attorney General Todd Blanche announced a slew of criminal charges against the Southern Poverty Law Center, a nonprofit research and advocacy organization that has worked for decades to investigate, report on and combat white supremacist, neo-Nazi...