Thanks, @heymattsokol
I see the point you're making, but I personally can't participate in a war crime, even if the perpetrators of that crime threaten me unless I fund their holocaust.
It's clearly illegal (based on current law) to pay tax because it funds terrorism. Anti-terrorism law is extensive in making this clear.
But I acknowledge that the law is merely words, and any sufficiently aggressive terrorist state will just do as it likes with me.
American citizens stopped paying taxes once before and it seemed to change things. Why not again? :)