That's an incredible story for a novel came out in 1947 (although it came out first under a pseudonym): sexual deviancy still relatively daring now under the pretext of fighting racial, all in a small town lost for funds from the conservative America, with white hero but in which flows a little black blood, fighting against the established order.
Two themes where Boris Vian at least 15 years ahead, and besides inherit a conviction for "gross indecency". Problem: once past the shock, it is still not much.