I don't understand the belief that LEOs live under a different set of laws than the rest of us. Sure there are a few things specific to them due to the work they do and legislation the outlines their duties but in the vast majority of cases they are under the same laws as everyone else.
And I really don't understand linking anything about the drug war or hyper-criminalization of low level drug offenses to them....as their name states, they enforce the law, they do not create it. Blame the drug war and hyper-criminalization on the <anti> leaders in DC...starting with Nixon and mishandled ever since.
As for all of the cases recently in the news, I don't know what happened...and neither do you. I imagine some of the officers involved were in the wrong and I imagine some were in the right. I do know that every single news story that I have ever actually independently known the facts for has contained factual errors. And I have zero belief that the reporting for any of these incidents is any better - especially considering how mainstream media is more entertainment than news in many cases.
As for the OP, keep in mind having an interaction on video is a two way street. In may help keep a 'bad' officer in line but it is also going to keep the 'citizen' from lodging false complaints since it is no longer merely a he said/she said situation. An a the article mentions, these 'upstanding citizens' are likely to be better behaved when they know they are on film so they are less likely to do something that requires the use of force.
wrt BWCs, I think they are a great idea...primarily for the protection they'll afford the LEO. I'm actually working with BWC now...adding analytics to improve the value of the video captured for investigative purposes. So hopefully in the future, the captured video will be more than just a cya tool.