At the beginning of the video footage you can see that the black Israelite were verbally attacking the indians. The kids ended up in the middle of this, accidentally preventing an escalation of the tensions only to be attacked by both sides.

In 1886, Chattanooga, Tennessee, a former railroad worker named Frank Cherry established the Church of the Living God, the Pillar and Ground of Truth for All Nations. (Yes, that was the full church name.) He mixed together elements of Judaism and Christianity, and believed that African Americans were descendants of the original tribes of Israel. He preached that these Israelite ancestors were chased out of Babylon into central and western Africa where they were eventually sold into slavery by the Romans. He believed that Adam, Eve, and Jesus were black. Cherry also preached that whites are inherently evil and hated by God.