In protest, we could all pick one day and yank all our money out of the bank in the form of a cashier check.
Of course, this could be considered conspiracy to commit treason as it might destroy the US banking system if enough people did that.
The best thing to do is for millions of Americans to change their withholding exemptions so that NO money is withheld from their paycheck, employers quit withholding SSA and medi-care taxes. Just shut them down. Starve the beast. IGNORE them.