Brilliant!

If used with a capital "P," it means just right of Socialism and a bit left of a generalized "liberal." In my experience = younger, college-educated, coffee-house crowd.

Always disliked the moniker; it implies that non-Progressives are not progress-oriented.

I don't think it has a set definitiion though.

I'm no English major, but if I've got my prefixes correct I believe the opposite of Progress would be Congress.

Eliminating welfare breeding would make progress towards decreasing global warming.