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So you subscribe to a politics which has no principles except the completely fungible "decency" and basically equates to, self interest with better manners than the Repugs. No wonder you get anxious when you are asked about it.
Progressivism has a long history in the US, and we once did have a Progressive Party. From them, you will have inherited support of eugenics and strict race separation.
Progressive, as it relates to our politics today, has no meaning. Okay, except wanting things to be better, if we can be decent about it.
So when do we get to "progressive libertarianism"? Do you see anything wrong with that?