No evidence of any direct threat, which you concede was true, yet you still had to be instructed to take down the false, inflammatory Facebook post. You're also accusing school personnel of siding with the bullies and ostracizing your son rather than protecting him, which would be tantamount to professional suicide by the principal and his assistant in today's public education climate were it true. An objective reader can conclude only that you've created the burden and are continuing to create your own consequence. You've taught your son well.