If you are stopped by police or immigration:

• Ask Officers "Am i being detained?"

• If you are not under arrest, you have the right to calmly leave.

• If the answer is yes, ask "what reasonable suspicion do you have that i am committing a crime?"

• You have the right to a lawyer if you are arrested. Ask for one immediately.

• You have the right to remain silent. If you wish to exercise that right to refuse to consent to a search of yourself, your car or your home.

• Regardless of your immigration or citizen status, you have constitutional rights.

If you need legal assistance go here.

For more info about your rights in NYC see here.