Yes, it has been known for years that Dr. King was uncomfortably close to the Communist enemies of all Americans. And the civil rights movement opened the gate to very bad forces who over the last forty years conducted an attack on America from within.
Civil rights, however, are something which are consistent with a conservative view of the Constituion (As opposed to the Eleanor Roosevelt's "Human Rights") Civil rights are and were something every American should expect to have guaranteed by the Bill of Rights, yet the marches, sit-ins and disruptions of the 1960s were necessary in order to secure those rights for many Americans.
To paraphrase FReeper rdb3, why was is it that a Dr. King was even necessary at that point in our history? In a perverse and unfortunate way the democrat segregationists like Byrd, Wallace et al. were one cause of the introduction of hard left politics into American life.
(Must get second cup of coffee . . .)
The Muslims seem to have a penchant for that tactic as well....and they have plenty of exuberant/motivated volunteers