Define a Police State:
In a nutshell, a State where the Police act with impunity knowing they'll never be held to task.
We are in a Police State, the only check on Police powers seems to be in the event of an officer actually killing someone as they arrest them, and even then they seem to get away with it.
I'm still currently waiting for an official report from the IPCC regarding an incident where an officer strangled a friend of mine while arresting him (I made the complaint as I was the main witness to the incident). The official line from the IPCC is "we can't do anything as all the officers involved deny it happened." This is depsite CCTV footage that shows the officer was heavy handed (unfortunately you only see the inital few seconds as the camera is very poorly located) and photographs of the bruises to my friends neck the next day.
In addition, at least 2 witness statements were never passed on and one key witness statement was made up by the police (the claim is that my friend's girlfriend was being raped by him, while being surrounded by at least 20 independent eye witnesses, none of whom saw anything more than a heated argument).
Added to all of this is the police's general attitude to anyone who looks like they might ride a motorbike and the arrogance they show. The officer who arrested my friend was even caught bragging about it and about how he was going to get away with it.