Did the Jews play a major role in the destruction of the Southern way of life? Absolutely.
1.) MLK was constantly flying to New York, Los Angeles, and Washington, DC to raise money from Northern and Western Jews.
2.) Felix Frankfurter was on the Supreme Court that wrote the Brown decision.
3.) Stanley Levison was one of MLK’s closest advisers.
4.) Northern and Western Jews poured into the South with the Freedom Riders, to work with SNCC, and to participate in the Mississippi Freedom Summer – two of these New York Jews, Michael Schwerner and Andrew Goodman, were murdered and became civil rights martyrs.
5.) New York Jews like Rabbi Abraham Heschel marched shoulder-to-shoulder with MLK during the Selma-to-Montgomery March in 1963.
6.) Jewish organizations like the ADL, American Jewish Congress, and American Jewish Committee were involved in the fight against Jim Crow.
7.) By the 1960s, Northern and Western Jews had significant power and influence in the Northern wing of the national Democratic Party.
8.) Mark Potok is a Vermont Jew.
These are just a few examples that come immediately to mind, but it is indisputable that Jews played a major role in the Civil Rights Movement.
Note: As always, the attack on the South came from the outside, particularly from the Northeast, and it only succeeded because of the existence of the Union. Were it not for the Union, there would have been no Brown decision, much less a Civil Rights Act of 1964, and hell would have frozen over before Loving.
Northern and Western Jews were heavily engaged in the Civil Rights Movement. Southern Jews were typically bystanders. The same division could be found among Northern and Southern Catholics and Northern and Southern Protestants.
Lots of Northern and Western Jews were recent immigrants from radicalized parts of Eastern Europe (the American Jewish Congress was an Eastern European Jewish organization) whereas most Southern Jews had roots in the region since the antebellum era and very different historical experience.