The activist members appear to be from the Black Hebrew Israelites, an organization labeled an extremist hate group by some because of its inherent anti-white and anti-Semitic racism.

Two people who had expressed an affinity with the group were responsible for the December 2019 attack on a JC Kosher Supermarket in Jersey City, New Jersey which left four people dead.

The clip shows the leader of the group placing his black boot on top of a speaker before a white man bends down to kiss it followed by a blonde woman who is presumably his partner.
“Get these white women and get these white people in here man,” states the Black Israelite activist.
https://archive.is/DftrI