I'm not sure I see the contradiction, could you change the wording a bit or explain it a bit differently?
So the contradiction is that you're arguing that laws are a top-down imposition but here you're saying Jim Crow laws were bottom up.(imo this is historically innacurate)
I'll defer to Dinesh D'Souza on this one. It's a deep deep rabbit hole of rewritten, hidden and spun history. Start with the shock doc "Hillary's America"