Another challenge: post-WWII Red Summer

What sorta factors would've been required at the end of WWII for there to have been major racial tensions and disturbances after black servicemen returned home, as had occurred in 1918-21 ? There were fears among white Americans of returning black servicemen who'd, as had been the case in WWI, refuse to accept the pre-war Jim Crow system of black 2nd class citizenship, and rise in open revolt against the established order, leading to protracted race riots, as had occurred during the 1919 Red Summer in Chicago, Washington D.C., Elaine, Arkansas, and Tulsa among other places. AFAIK, there were OTL no major race riots in 1945-47 of that same magnitude as post-WWI, although there were instances of black veterans beginning to agitate for civil rights in their communities North and South, such as a march a few mths after V-J Day by 100-odd black vets in Birmingham IIRC demanding equal voting rights. What POD/s could be projected to have facilitated major race riots so that there would've been another Red Summer ? How would the embryonic civil rights movement have been affected ? Perhaps an earlier and greater emergence and popularity of black militancy as was later espoused by the Black Panthers in the 60s ?

There were many disgraceful incidents after WWII ended of black servicemen returning home facing the most disgusting acts of racism from local whites despite having given their all for their country and democracy overseasm including the tragic case of Sgt Isaac Woodard, a black soldier who'd served in the Pacific, and in summer 1946, on his way home, was accosted by the local sheriff in 1 South Carolina town (can't recall the name off the top of my head), accused of being drunk and disorderly- which he wasn't, since he was a nondrinker- and viciously beaten, including being jabbed in the eyes by the bigoted cop's nightstick, then thrown into the local jail overnight, resulting in permanent damage to his eyeballs and total blindness. This shameful injustice did go to court, resulting in the sheriff being acquitted by an all-white jury on the ground of self-defence (no surprise at all, huh ?), but at that time there was widespread national outrage at such acts of degradation committed against black servicemen who'd gone to fight for a better world, and still received such bigotry and racist violence upon returning to their country. WI such outrage at the Isaac Woodard case and similar injustices had crystallised among the black population into a great degree of anger which exploded in much the same way as the 1943 Detroit riot, and resulted in race riots in both major cities and smaller urban centres ? Could the coverage to a greater extent of such travesties have enraged black ppl so much that they would've taken out their frustrations violently and defended themselves against white racism as had occurred post-WWI, and been the POD facilitating a post-WWII Red Summer ?
 
The southeast states go into a protracted nasty guerilla war like OTL Vietnam.

The same might have happened later when a lot of black soldiers came back from Vietnam, if Washington hadn't seen the writing on the wall in time and forced black equality.

One possible c.1970's flashpoint :: a black man assasinates that segregationist governor Wallace, and daubs on a wall "Heydrich is dead!!". Black men flamethrower attack a KKK meeting.
 
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