I barely read the headlines of this Sarah Sanders story but it seems pretty simple (from the anarchist's perspective):
(1) Red Hen can refuse service to anyone for any reason; and
(2) The public can decline to patron that establishment (for any reason). Side note: kinda reminds me of Chick-Fil-A (another story from a few years ago, and I barely read those headlines because I never ate there).
Maybe Red Hen will issue an apology. Let's hope so. Let's sit back and watch the market forces (hopefully) correct the bad behavior. Sure as shit a LOT faster result than (futilely) waiting four years to vote to correct an injustice.