IRL - Those black guys would not have made it to DC - spoiler alert

The racist cop in Tennessee, had the fight happened short of Bristol - that is, would have spotted the fight......rounded some more State troopers, and had all of their black asses arrested (and probably lynched by the good ole boys, for good measure).

Flip and the black gay dude probably would have been shot dead.....if they didn't stopped fighting, before the group gets arrested.

THE END

I also find it funny in essence, that the whole stupid trip was a waste of time and effort anyway, in the movie - as it all comes down to the fact that the stupid black dudes never made it to the march, because some old and rusty, burned-out, self-righteous black dude ends up having a coronary.