WASHINGTON — Police were on alert Sunday afternoon after a small group of self-proclaimed “alt-right” protesters led by white nationalist Richard Spencer gathered in front of the White House.

The group was met by a group of counter protesters and a heavy police presence.

A video posted by Spencer showed a small number of protesters chanting “Build Kate’s Wall,” an apparent reference to a jury acquitting an undocumented Mexican migrant in the shooting death of Kate Steinle earlier this week.

Steinle’s death became a major talking point for President Donald Trump’s campaign during the 2016 election and Trump blasted the verdict on Twitter.

D.C. police said that, to their knowledge, there were no arrests and both groups dispersed rather quickly.