Comment by teddyh
If you make that conclusion after watching police camera footage, aren’t you making a classic survivorship bias fallacy? Those films are not a randomly-selected representative sample. Those films that you watched were those films that
1. Were allowed by the police officer themselves to be recorded in the first place (i.e. the cameras were either deliberately switched on, or at least suffered no timely “camera malfunctions”)
2. And also only films which made it through the filter of being considered suitable for publication, after the fact.
What you have actually been watching are carefully-selected propaganda pieces that, even assuming they are indiviually true and unaltered, are undoubtedly presenting a false view, supporting the powers that select them.
Such videos are not the only basis on which to make the argument I put forth. But you'll also find many sources of police videos that are not "released" by the police, but secured by FOIA requests. There are of course examples of videos with police planting evidence, or using excessive force, or other unfortunate things. But by and large, you'll see over and over, the police behaving admirably and in the public interest.