Why were there no adults on the Playground? Was this afterschool? During school?
If these were my kids I would pull them out yesterday.
For those living in Ohio contact your legislatures and demand a hearing on this incident, investigate the curriculum they were being taught and their teachers, and then presenting a bill to specifically defund this school. Might go nowhere, but attention needs to be drawn to this in the very least.
And child welfare needs to be involved - these young kids were taught this hate and violence - they did not come up with this on their own.