The best thing to do is nothing! What I mean by that is that if no one paid taxes, The IRS would cease to exist. 100 million plus taxpayers against 100,000 IRS agents, mostly pencil pushers, and maybe 2,000 of them armed. Doesn't seem like a fair fight. The conundrum is getting all those who are employees to stop their employer from acting as the extortionists collector and stop withholding taxes straight away. You literally could bring the system down without doing anything, just stop funding it! But it would be much easier to walk on the sun than to try to get that through the heads of the indoctrinated masses. And I'm not into the whole voting for a "nicer master" deal.
By the way, did anyone ever notice when you put The IRS together it says THEIRS? That says it all!