No, federal laws requiring school busing was the primary complaint. Nixon promised to ease back on those requirements. There were federal social laws as well, but it was more to do with quotas and race preferences for jobs and federal aid. But the continual attacks against Southern Churches, Southern traditions (not direct racial issues but implied), changes to school curriculum, and attacks on all things about our Confederate past was a big part of dropping the national Democrats. Outward hate for our military, by mostly liberal Democrats, was another big reason Southerners started dropping that party by 1972 and went Republican. And by 1980 Reagan's promise of a big military buildup against Carter's dismantling of the armed forces was the biggest draw by far. After that the South would continue to stay mostly Republican, even Southern Democrats had a hard time running for the President in the South after that.
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David Upton