I'm not aware of the alt-left media. Alt-right is white nationalist, like Steve Bannon's Breitbart News. Bannon is to be Trump's chief White House strategist and senior counselor.

Then there is Faux News. Not racist, but number one with racists. They are the propaganda arm of the Republic Party.  On the left, you have MSNBC. They are definitely biased, but they don't deliberately lie to their viewers, like Faux does.