In this day and age that is getting few and far between. Every time there is an arrest people pull out their cell phones and press record.
Even with that? Police body cams still record the popo doing stupid shit. Amazing is it not these officers forgot they were wearing cams?
Even with body cams there have been incidents where they had conveniently turned them off for some reason, or it “malfunctioned” at the right time. Or it happens in a rural location with no public around. And many departments still do no require body cams.
I think it happens a lot more than we know now days.