1. In case you, or your loved one is questioned, arrested or detained by the Police, do not fight, argue or engage in heated verbal exchanges. Act as reasonably polite as possible, proceed to find out the reason for the arrest and then proceed to cooperate as asked. This might go a long way in resolving the issue.
2. During the arrest or confrontation, do not resist, this will simply heat up the situation and might lead to additional charges being given to you, which powers are given to the Police by law. It might also give the Police an excuse to use excessive force.
3. Before you are put in the cell, ask to communicate to a relative or loved one by phone or SMS, and in that communication, give them your location, and how you can be contacted.
4. When at the Police Post/ Station, then ask to speak to the Officer in Charge (O.C) of that Police station and request for Police Bond if the matter is for further investigation.
5. In case you then feel the arrest was unlawful, or your rights were abused during the arrest, there are a number of legal means you can take to seek compensation or redress e.g by suing those who arrested you.
Advice from barefootlaw.org.