[thex86]

I don't know what you are smoking but given your comment history, I am sure you would be fine if the police came knocking at your door at night and randomly wanted to search your place, without a warrant. Right? Since you did nothing wrong, it should be OK for the police to randomly search people's places and arrest them. We should trust the police also and let's remove the judicial oversight they have. Correct?

You should ask yourself why the police should not be allowed to do this. And then if you do understand, you may perhaps realize why the GCHQ should not be allowed to carry out mass surveillance.