anything from making a big investment to contributing in your job. 1/
if you perceive the state under which you operate to be sufficiently ethically abhorrent (obviously, there's a case for the abhorrence of any state, there are degrees and judgment calls), is the ethical choice to minimize participation in the formal economy that state superintends? 2/
the strength of that formal economy defines the degree of resources from which the state can tax, its effective ability to muster coercive power, and most importantly the political legitimacy that ensures its continuity. 3/