Actually I'm purposely mixing them. Liberalism was never as black and white as people made it out to be. Sure John Locke had a long list of reasons why natural rights should be a modern tenant of a just society, but to the average citizen the shift from classical liberalism to contemporary liberalism was a series of steps, each of which made sense.
I understand what you're saying, but the average citizen wasn't alive for both John Locke and the Great Society. I guess I disagree with there even being a shift at all. They are quite different worldviews that unfortunately share the word "liberalism".