But societal attitudes don't change until the dinosaurs having those attitudes finally die off. We still have politicians in power who believe that the civil rights act of 1964 should never have been enacted.
You are correct about the dinosaurs.
One of those dinosaurs who opposed the Civil Rights Act died off not too many years ago.
Few people now remember that the longest filibuster against the 1964 act was conducted by Senator Robert Byrd (D-W.Va.), who personally spoke against the legislation for 14 hours and 13 minutes on June 9 & 10, 1964.