All police officers hold the office of constable. This means that the officer has sworn an oath under common law witch it is there duty to protect the public from no loss, no harm, and no injury.if you have not cause any of these you have done nothing wrong.
If a police person that will not state weather he/she is under his/her oath then they are an un- Australian army on your soil.(DANGER) wrongful arrest is probably the most common abuse of police powers you all must remember,
All laws that are made by a statue or act can only be law by your consent.