Walmart is facing calls for a boycott from supporters of President Donald Trump after Christy Walton, a billionaire heiress to the retail giant, funded an ad in The New York Times criticizing the commander-in-chief.

At issue is a full-page New York Times ad, paid by Walmart heiress Christy Walton, highlighting upcoming protests.

The honor, dignity, and integrity of our country are not for sale,” read an ad in The New York Times paid for by Walmart stakeholder Christy Walton.