Who are Obama's sharpest, best-known critics on the left? [View All]

[lwcon]

During the campaign, Obama was widely celebrated by famous names and left-leaning media figures.

A year into his presidency, some folks here and elsewhere aren't satisfied with his center-right agenda.

Yet left-side criticism of Obama is nearly invisible in the mass media... except for those who (correctly, IMHO) saw the lack of Democratic enthusiasm in the recent MA special election as a liberal-base referendum on his presidency.

For those who want a more impactful message of lefty-side dissatisfaction with Obama's handling of domestic and foreign policy, and his rhetoric that frequently demeans and disempowers his base, seeing famous personages push him from the left will be essential.

Who's doing it? Who's just getting warmed up?