Depends on what you consider right wing but its not like any republican today would be against civil rights expect for maybe libertarians like rand paul or thomas massie .
Oh, I definitely don't mean just being against blacks & whites being able to drink from the same water fountains or entering/leaving shops through the same entrances. I daresay not even the chuddiest Southern Republican doesn't mind that sort of thing these days. But rather, something like
Louisiana v. Callais would not - could not - have even been on anyone's radar back then because the idea that niggers were entitled to their own bonus congressional districts, forever, because muh slavery and the KKK was sacrosanct & unquestionable across pretty much the entire mainstream political spectrum. Until now, those districts were considered permanent markers of the irreversible march of progress & the victory of the Right Side of History™, whose eternal existence was to be taken for granted by both Democrats & Republicans up to the end of time.
2015-16 was also around the same time that the idea of the Confederates not being just 'the wrong side, but ultimately still fellow Americans at the end of it all' (not even 'they were the good guys actually') was starting to be aggressively pushed out by the 'Southerners were
all white devils who laughed & sipped mint juleps as they whipped the skin off niggers' backs, John Brown was megabased and all Southern whites should have been subjected to a Haiti-esque genocide in 1865' party line which is the orthodox position on the left these days. This was right after Dylann Roof shot up that black church in '15, which was then used to justify removing the Confederate flag by Nikki Haley (then Governor of SC), and directly led up to the widespread anti-Confederate iconoclasm of 2020 (besides all the statues taken down, streets renamed, graves dug up, etc. Mississippi also had to change its flag, the last state flag to still incorporate the Confederate battle flag directly IIRC, that year).
It's not the general idea of civil rights (lower case) that became passé in these last ten years, the idea that anyone seriously wants to go back to segregated water fountains & burning crosses on uppity niggers' lawns remains a far-left strawman. It's Civil Rights with capitals - essentially nigger worship - that has become a lot more questionable, so much so that a mainstream right-wing figure like Matt Walsh can now openly criticize it & its heroes (such as the aforementioned MLK, in 2016 his sainthood was basically considered fact in the mainstream & any suggestion that he might've been a philanderer, a commie plant, or in any way less than absolutely angelic in character was an unfounded FBI smear; thus to give credence to such ideas meant you were an unreconstructed racist pining for the 19th century), thanks to 2020 and increasing nigger fatigue. The attacks on the CRA/VRA and its fruits, like the recent nuking of racial gerrymandering, would have also been unimaginable a decade ago.
