KEY POINTSDOJ alleges SPLC used donations to fund extremist informants without disclosure to donors.SPLC accused DOJ of "targeting" them as part of retribution campaign against President Trump's political enemies. Arguments center on if funds were distributed illegally.The case is set to go to trial in October. The Southern Poverty Law Center pleaded not guilty during an arraignment Tuesday to charges accusing the organization of secretly funding the leaders of extremist groups while insisting its mission was to abolish them.The Department of Justice said the SPLC defrauded donors by using $4.1 million of donation money to pay extremist leaders acting as informants. Acting...