for a few years, trying to educate parents about the the UN's 'learning for sustainability' program which gets the kids from the start, but with no success. The HS and college kids joining this 'model UN' are already well indoctrinated into believing the UN to be the center of the universe.
I don't want to be discouraging, but trying to extract such indoctrination would need the UN to collapse and the parents to take over the school system.
I don't know what your abilities are, but perhaps you can make a short youtube about the UN and why the program is bad and try to make it viral. I have no ability in video making - I don't even own a cell phone. The film - you should probably make filmS - need to be short and punchy because you want the kids themselves to share it.
All you can do is try to enlighten.
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy.