I fail to understand how it's hypocritical to advocate recording of the people sanctioned by the state to use lethal force while decrying a system that is by all measures ripe for abuse.
Because recording police is justified by "we're both in public, and I should be able to record public things", which justification applies equally well to police using cameras in public.
Nope: the government is not a 'person' in that sense because it has a special role in society, which has been given by society and needs to be controled by society.