The FBI is investigating anti-fascist activists for an alleged plot to buy guns from a Mexican cartel in order to “stage an armed rebellion” at the southern border, according to an unclassified document obtained by The Chicago Tribune. The FBI document, from December of 2018, warns of militant antifa activists planning to “disrupt security operations” at the U.S.-Mexico border. The group allegedly planned to buy guns from a Mexican cartel associate known as Cobra Commander, in order to “stage an armed rebellion at the border.” The source who provided it to the San Diego Tribune asked the outlet not to...