A bit of looking and voila, which I think is what you refer to.
Longer video shows start of Covington Catholic incident at Indigenous Peoples March
From this link...
"In an interview with the Detroit Free Press, Phillips said the incident started as the students from Covington Catholic were observing a group of Black Israelites talk, and started to get upset at their speeches.
Phillips said some of the members of the Black Hebrew group were also acting up, "saying some harsh things" and that one member spit in the direction of the Catholic students.
"So I put myself in between that, between a rock and hard place," Phillips said.
The videos show separate angles and do not show the same people interacting with the students. The Enquirer has not verified the identity of the person who took and posted the video. "
Does not change my feelings one bit. I, and probably all others, can supply reasons for bad actions, which to me is secondary