The next time some politician comes out in favor of social services or governmental services for illegal aliens, note what office they hold. Then, show up at that House or Senate or City Council meeting and just take a seat with the rest of them. When they look at you funny and ask what you're doing there, tell them you're an "undocumented legislator."
Vote, take part in the questions, make motions, do it all. Act just like you belong. Before the police pull you out, make a point that just because you aren't there legally doesn't mean they can deprive you of your rights as a legislator! When they point out that you aren't a legislator, ask them "Sez who? I have as much right to be here as anyone. You can't throw me out."
Of course they will, since you violated the law, or at least the law they care about, the one that negatively affects them. But your point will be made.
Try to get your pension before they toss you out.