Ex-prosecutors say the Justice Department's case against the Southern Poverty Law Center for using donations to pay informants at hate groups is very atypical.Show Caption Hide Caption SPLC indictment reignites debate over paid informantsThe DOJ indicted Southern Poverty Law Center for paying informants in hate groups without telling its donors. The FBI has also long paid informants.The Justice Department announced with great fanfare a series of fraud charges against a storied civil rights group that has angered conservatives in recent years. But the unusual nature of the charges could present challenges in court, especially for a department already under fire...