Outdoor retailer Patagonia used its website to slam President Trump on Monday over his decision to shrink two national monuments, replacing its usual homepage with a black slate that reads: "The President Stole Your Land."

"In an illegal move, the president just reduced the size of Bears Ears and Grand Staircase-Escalante National Monuments," Patagonia's website continues in smaller font. "This is the largest elimination of protected land in American history."

The retailer's new homepage is in reference to Trump's order Monday to drastically reduce the size of two national monuments established in Utah by his predecessors.

The proclamations signed by Trump will shrink the Bears Ears and Grad Staircase-Escalante national monuments by almost 2 million acres combined.

Patagonia also announced Monday it would take legal action against the White House over the rollback, joining a number of organizations speaking out against the decision. A coalition of Native American tribes announced Monday that they also plan to sue the Trump administration over the decision.

"We've fought to protect these places since we were founded and now we'll continue that fight in the courts," Patagonia CEO Rose Marcario said in a statement, according to CNN Money.

REI, another outdoor gear company, responded to the president's order in a similar fashion, lending a portion of their website's homepage to question the president's order.

“Despite the loss of millions of acres of protected lands this week,” the company wrote, “REI will continue to advocate for the places we all love.”