2. When you are lawfully present in any public space, you have the right to photograph anything in plain view, including federal buildings and the police.
3. If you believe your rights have been violated, when you can, write down everything you remember, get contact information for witnesses, and take photographs of any injuries.
4. If you get stopped by the police, ask if you're free to go. If they say yes, calmly walk away.
5. If you get arrested, you have a right to ask why. Otherwise, say you wish to remain silent and ask for a lawyer immediately. Don't sign, say or agree to anything without a lawyer present.