Re: Can't wait for... @AC
If it's an ordinary arrest, then terrorist stuff is irrelevant.
If terrorist stuff is relevant, then the COURT still gets to see the police footage.
If the courts still fail to convict police officers in the wrong, or convict innocent civilians with proof they are in the right, you have a problem that no amount of tech can solve anyway.
Everyone can moan, but police footage is a forward-step. The police footage of the recent murder-by-cop in America was released by the police themselves, and if they'd had body-cams, that would have been an invaluable instant-proof of what actually happened.
And if you claim police brutality and JUST at the moment that would prove your case the footage cuts out? That should be no different to concealing or destroying evidence in other ways. No reported problems but they ONLY happened when the prisoner was walking down the stairs to the cells, and then worked immediately afterwards on inspection by the tech support? Yeah, a court cannot ignore that without being - in itself - corrupt and able to ignore whatever it likes anyway.
There's a million reasons to have cameras and none not to. Put them on. If there's a sudden spate of cameras going off only at critical moments, then it's easy to spot the pattern and discipline the officer. In the same way, if their ID isn't valid, their car isn't roadworthy or their uniform not compliant, the officers in question will be asked to return to the station to pick up a replacement immediately and anything that "may have happened" in between will be heavily scrutinised.
Put bodycams on. Make them work in pairs, if necessary. So *BOTH* of your cameras both stopped filming at a critical moment just before? Mmm. Yeah, a court and your lawyer won't see through that.
This solves the problem with the trust in the police. It doesn't solve the problem of trust in the courts or other parts of the justice system. But it's the police that always get the rap from the public when the CPS decides they don't have evidence to prosecute etc. so that isn't a situation you can fix.
Restore trust in the police, though, and suddenly the public have a much better reason to trust them. Bodycams are essential in this, in this day and age.