Black Lives Matter protesters faced off against white supremacists in Houston recently, shouting insults each other outside the office of the Anti-Defamation League. The white supremacist group, which calls itself White Lives Matter, shouted “No They Don’t” in response to chants from BLM of “Black Lives Matter.”

BLM protesters urged opponents to “kill yourself, follow your leader,” referencing the suicide of Adolf Hitler, and the shouting threatened to erupt into violence. Police were on hand, setting up barriers to keep protesters and the white supremacists apart.

The white supremacists showed signs of Pepe the Frog — which has become essentially the Internet mascot for white supremacy — as well as signs saying “Stop Killing Our Police Officers.”

Many of the white supremacists were wearing Donald Trump hats and claimed they weren’t Nazis, but were rather trying to say that white lives matter.

Police watched the interactions closely, with some officers mounted on horseback. Chants went back and forth between the two sides for hours.

The white supremacists were there to protest the existence of ADL, which they said was an “anti-American” organization. ADL called White Lives Matter a hate group recently.

After hearing of the plans of white supremacists, a large amount of counter-protesters convened on the site to oppose the group, far outnumbering them.

“We’re here to drown the voices of the White Lives Matter white supremacists out. They’re out here protesting the Anti-Defamation League, but it’s more than that,” said organizer Ashton P. Woods, 31, according to a Chron.com report. “They’re white supremacists. They no longer matter, they never did. And it’s time for their voices to be drowned out.”