Rev. Martin Luther King Jr. was not a socialist. He was a Christian and Republican.
MLK may have been an R but he was still a Socialist along with DuBois, Robeson and most of the others involved in the Civil Rights movement. The KGB was very involved with any way to disrupt the Social Fabric of the US from the bogus Rights, Union and Environmental groups. It’s well know from the history of the Soviet Disinformation efforts. Read Blacklisted by History or Comrade J.