J. Edgar Hoover hated Dr. Martin Luther King Jr. Hoover wasn't necessarily a racist; he hated anybody who challenged his almost omnipotent power over the American justice system. Hoover didn't like civil rights leaders, he didn't like antiwar protesters, he didn't like social activists and he especially didn't like commies. And if you were part of the FBI in the 1960s, then you had better think the same way. J. Edgar Hoover didn't like inaction, either. If he didn't like you, he didn't just sit around and stew about it, he did something about it.