My takeaway is that like anything, generalizations miss a lot. BWC have lead to more efficient triage of complaints against police officers that even if sustained reduce the substantial amount of uncertainty. It is an open question to what degree BWC neutrally observe police behavior which is better than anecdotes or if the presence of the observer alters police behavior to meet standards.
https://academic.oup.com/policing/article/doi/10.1093/police...