Let’s put aside ethical questions about the police using a mobster to solve that case. Let’s focus instead on the crime itself. There are two ways to look at it. One way is the usual, politically-correct way, i.e., three innocent civil-rights workers went down to the South in 1964, simply to help oppressed Blacks gain political and social rights, and evil Klansmen murdered them. The other, politically-incorrect way to look at it is like this: two left-wing Jews (Goodman and Schwerner) and one Black went down to the South in an attempt to politically and racially transform that entire region. After all, the remaking of America couldn’t proceed very quickly as long as the South was full of rednecks and Jim Crow laws. So the civil-rights workers were engaging in the act of deliberately and permanently transforming an entire region and culture, largely for Jewish benefit, since Jews built the civil-rights movement. The Klan then responded to the actions of the civil-rights workers [1][2]:
[Article].
[1] about Jews and the NAACP (scroll about half-way down the page): [Here]
[2] about Jews and the civil-rights movement: [Here]