What Light Does the Civil Rights Act of 1875 Shed on the Civil Rights Act of 1964?

The 1964 Civil Rights Act was the first serious antiracist law to pass the U.S. Congress since a similar but much less comprehensive law was enacted eight-nine years earlier, during the First Reconstruction. What sort of struggle led to the proposal and adoption of the 1875 law, how has that law been viewed by historians, what effects did it have, and what parallels and differences were there between the 1875 and 1964 episodes? What can we learn about the Second Reconstruction by comparing it with the First? (See Kousser 1992 for a fuller discussion of the two eras, roughly 1865-95 and 1950-90.