( CNN ) -- FBI memo called King the `` most dangerous ... effective Negro leader '' in U.S. Hidden wiretaps turned up no Communist Party ties , just extramarital affairs . " The FBI was not only monitoring King, but also his wife and mistress.
FBI memo called King the `` most dangerous ... effective Negro leader '' in U.S. Hidden wiretaps turned up no Communist Party ties , just extramarital affairs . " The FBI was not only monitoring King, but also his wife and mistress.