This Guide will give you a general idea of what the law says that police can, cannot, or might be able to do when interacting with people. The Guide is intended to help you manage these interactions, and it shows how some people fight for their own rights, the rights of others, and for equality.
This is important because being stopped by the police is stressful and can sometimes go badly. Although police officers have a duty to obey the law and to respect your rights, you cannot assume that this will always happen: while it is good to know your rights, it is also good to use your best judgment to keep yourself safe.
Reading through the whole Guide may be helpful.