You think it is more important to camp in parks with witty signs and try to shame bad faith actors into behaving more appropriately? You think your participation on a local level doesn't matter?
Well, those bad faith actors sure seem to think local elections matter. And they're hard at work while you're away in the park.
I can't imagine how helpful additional positive participation would be to a grassroots campaign for school board. There is change to be made right there at home in everyone's community.