From the magazine description:
"Juxtapoz magazine presents a gallery of underground artists who influence much of the fashion, graphics, and new art we see today. Full color layouts featuring painters, sculptors, cartoonists and photographers are featured along with interviews, rare portfolios, sketches and reviews."
Why this is progressive/liberal: While not all artists are progressive in their politics, art, especially the genre-busting kind of art championed by Juxtapoz, is progressive. Any art that inspires you to think differently about the world is art that makes you think. And thinking is one of the values most cherished by progressives.