It sounds like a tense situation may have been escalated rather than de-escalated by the police

Excerpt from the article above

The statement notes that Charlie was asked to come to the school regarding a custody issue. Charlie was allegedly asked to leave the school after refusing to answer further questions by the officers. Charlie cooperated with leaving the office. Outside of the office, Charlie protested that the principal had not expressed a desire to remove them. After this, the video released by the DA’s office shows Charlie moving toward the exit-doors, when Charlie’s child, according to the report, “arrived in the hallway by coincidence.” Charlie appears to be trying to get their child’s attention, while moving towards the doors to exit. Officer Steve Timm, a school resource officer for the Bethel School moves aggressively toward Charlie, shoving Charlie through the door and then against a wall outside. The DA’s office disputes that Charlie was moving toward the door to exit. What we know after this point, comes from the badge-cam video of Officer Timm and Officer Aaron Johns.
We know that issues involving a person’s child are already tense and delicate situations with the potential to escalate. We also know that people of color are disproportionately the victims of police violence. We know that Charlie, as an activist against police brutality and a descendant of Mexican and Filipino parents, was aware of this. We do not know, however, what was going through Charlie’s mind when they were shoved out of the door in front of their child and pinned to the wall. We also do not know why Officer Timms felt the need to aggressively shove Charlie through the door and against the wall as Charlie appears to exit the school.