The hippies had in mind something that they wanted, and were...

The hippies had in mind something that they wanted, and were calling it freedom, but in the final analysis freedom is a purely negative goal. It just says something is bad. Hippies weren't really offering any alternatives other than colorful short-term ones, and some of these were looking more and more like pure degeneracy. Degeneracy can be fun but it's hard to keep up as a serious lifetime occupation.