Demonstrators, which include Southwest Airlines employees, gathered at the Southwest headquarters in Dallas, Texas, on Monday to protest the company’s vaccine mandate, holding signs and chanting the ever-popular anti-Biden slogan, “Let’s Go, Brandon!”

Videos captured by investigative reporter Drew Hernandez show a long line of demonstrators outside of the company’s headquarters in the Lone Star State, protesting the mandate and holding signs reading “Freedom Not Force,” “Jab or Job: What Kind of Choice Is This,” “Support Gov. Abbott’s ban on Vaccine Mandates,” “No Jabs For Jobs,” and “Let’s Go Brandon!”

Protesters also engaged in the viral chant, “Let’s Go, Brandon!” The phrase soared in popularity after NBC sports reporter Kelli Stavast interviewed NASCAR driver Brandon Brown after his victory at Alabama’s Talladega Superspeedway this month. The crowd was shouting “Fuck Joe Biden,” but she inexplicably interpreted it “Let’s Go Brandon!”