There used to be good guys in the world, and bad guys. The code of law was simple, it wasn't nuanced -- you knew who was bad. Bad guys needed to be punished, and that's what the good guys were there for -- swift justice. A man's word meant something, people had a right to be left alone, and most folks were afraid of God. Men were men, and women were women.
The Left wasn't going to make any progress at all if society held to those values -- so they spent a few decades sweeping it all away.
And here we are.