[X-Post from /r/Australia/] Where can we learn about our rights?

Hey guys,

So after being on this American dominated site for some time I feel as though it's important to know about our rights. For example, if a cop things I've got drugs in the car is he allowed to go through it without my permission? Or if the government thinks I'm feeding a rabbit (in QLD) or say have kidnapped someone are they allowed to raid my house?

Where do we find out about these things?

Cheers