Corrected entry: In the riot scene Mahoney's window is open when he jumps into the police car and you don't see him close it, then when the rioters get to the police car it is closed.
Corrected entry: I know they can't throw people out, but wouldn't a liberalised Police Service take a very dim view of bigots such as Copeland?
Correction: This seems more like the poster's personal opinion than a mistake.
Corrected entry: Cadets Blanks and Copeland have all their hair shorn off at the police barber because they think that it's like the army. When they discover that it wasn't necessary, both men look quite horrified. Yet over the whole course of training, which took about 12 or 14 weeks, their hair does not grow back even an inch. And it's quite unlikely that they decided to keep it that short since they seemed to like having hair.
Correction: IMHO, it is certainly possible that once they got used to the idea, that they liked it or at least decided to try it out for a while. Many men keep their crewcuts even after leaving the military even though they would never have had a crewcut before.
They were also trying to suck up to Lt. Harris, and he loved their haircuts. They could've kept them for him.
Corrected entry: All Jones has is a microphone, which is hooked up to something, (we never see what, though), and he is able to control the police station and Police Academy's PA systems. So what is he carrying around which makes him able to do this? (And where can I get one)?
Correction: When we first meet Jones, we see that his microphone is hooked up to a portable bullhorn, of the type police use for crowd control. Jones does not control the PA systems, people just think that's where the sound is coming from.
Plus the person doing the PA announcements sounds like Jones, because during the call for riot control Mahoney says something like "Was that you Jones?" and he says "Not this time."
Correction: That is because he rolled up his window off screen when the camera is on the Commandant, who is shown rolling his up.
MasterOfAll