In Miami, writing "No English" on the summons does the trick. Or, tell them that you do not consent to be searched (courthouse searches are deemed to be "consent" searches) so please have someone escort you inside without being searched. A quick note saying, "only God can judge" gets you off the hook. They'll hustle you right out of there if you mention jury nullification. Announcing that "the defendant must be guilty because the police arrested him," or "plaintiff lawyers exaggerate injuries to get more money" usually work. "I'm prejudiced against [fill in the blank] people" works too. If this doesn't work immediately, serve up a stereotype in response to the judge's question. "Everyone knows that most crimes are committed by black people" will earn you an a quick excusal. I could go on. "I can't pay attention because I'm worried about..." "Maybe this case is important to these people but I've got my own problems and I can't concentrate on their while I'm worried about my own."
Imagine if everyone did this. Then when you’re in court for a crime you didn’t commit the only people on the jury would be those too stupid to have failed to be dismissed from jury duty.
"Your honor, it is my ethical framework that I first must determine if the law should even be the law, and secondly if the defendant did it if the law is worthy. I will find the defendant not guilty even if they claim in open court they did it, but the law is bad."
(Basis and justification of jury nullification.)
Edit: Seriously, -1's? Given how many bad laws there are, judging the law first, then the defendant should be a given.
The last time I was on jury duty in New York, any time someone tried any of these, the judge just reassigned the person to the jury pool for civil cases which, he claimed, are usually longer trials and likely to be more of an inconvenience.