Why do Obama's critics think they own the rights to the label "progressive"

[ProSense]

It's the most bizarre thing. Critic = progressive. Anyone who disagrees with them isn't progressive.

There were people calling Bernie Sanders a sellout because he voted for the Senate bill.

I'm a progressive, but I also live in the real world, where times are hard and people want progress.

All the noise: Obama is a corporatists, center-right, a sellout, a liar, a failure---is utter bullshit.

Obama is one of the most, if not the most, progressive Presidents ever.

Take a look at your own Senators and Represenatatives, if they aren't as progressive as the ideas you're pushing, you've got work to do.

If they support the Senate bill to your disapproval, you've got work to do.