From the National Lawyer's Guild a guide to your rights. Learn them, memorize them, tatoo them on your body/brain, print out the poster and paste them around the city, bring a discussion of your rights into random conversations, etc...
This is the first step:
Know Your Rights: Printable PDF Copy
Know Your Rights Links
Also check out their Political Protest Manuals:
Exercising Your Rights Of Political Protest Manuals
Right to Protest