Maybe grab a burger next time.

White House adviser Stephen Miller was accosted at a Mexican restaurant by a patron calling him a “fascist” — two nights before Homeland Security Secretary Kirstjen Nielsen was hounded out of another south-of-the-border eatery, sources told The Post.

Miller chose to dine at Espita Mezcaleria in the DC neighborhood of Shaw on Sunday, amid growing anger over the Trump administration separating migrant kids from their parents — a policy the aide had described as a “simple decision.”

“Hey look guys, whoever thought we’d be in a restaurant with a real-life fascist begging [for] money for new cages?” a customer at the Mezcal joint snarled at Miller, according to a source who saw the encounter.

Miller didn’t respond and scurried away, the witness said.

But he didn’t leave the restaurant — unlike Nielsen, who abandoned MXDC Cocina Mexicana on Tuesday when protesters marched in chanting “shame!”

The DC chapter of the Democratic Socialists of America says it was tipped off to Nielsen’s head-scratching dining location and quickly rounded up 15 rabble-rousers to storm the trendy eatery.

“We were high-fived by several patrons and employees as we were leaving and some patrons started clapping along to some of the chants,” said a spokesman for the group who wouldn’t give his name.

A worker at the restaurant Wednesday said she didn’t witness the high-fives, but confirmed that a sizable portion of the restaurant’s employees are Mexican and Latino.