The original news was that the students, including Nicholas Sandmann, confronted and accosted Nathan Phillips by swarming him and threatening him in a physical manner and blocking him and refusing to allow him to retreat.
Video showed that prior to the interaction with Phillips, the kids were taunted by a group of black preachers using homophobic slurs. The kids sat down and did some school chants to try to avoid the situation. Nathan Phillips went up to the group of kids banging on his drum and chanting. They did not confront Phillips
There is a big disparity between what was initially reported by news (and along with that the condemnation and attacks on the kids, including death threats), and what actually happened.