I never said that...? Look at what quoted again dude.
"Students drown out the negativity with school chants."
"The students begin to chant to the beat of Nathan Philips drum."
"The video does not appear to show any students 'chanting build that wall'."
Your video disproves what you're trying to push. Stop trying to project your racial politics on to this, he clearly approaches the group and gets in the face of the one kid. They join in with his song. What were they supposed to do? Bow their heads in hushed reverence?
That's a quote from the video you linked at the timestamp you specified referring to the BHI.... I'm not sure you have the best of grasp of....much.