I guess my first question would be to ask from where was your law degree was issued? It is never about submitting to the badge, and especially because "they" believe that you should. You should abide by the laws of your society because both God and your legislators have required such actions of you.
As for examining excessive use of force... I am in full support of such an endeavor. The problem is that right now our society is always in a rush to judge the police officer is wrong, the Ferguson, MO, case in point, and that is rarely the case. Notice that in this post and my previous one that I am not saying there aren't incidents that officers haven't been wrong. The case in SC, based strictly on what has appeared in the news (because that's all I know about it) is a jagged pill to swallow.
Both of you, and any others that would be willing to do so, are more than welcome to go to your local departments and sign up for a "ride-a-long" with a local officer to see the day to day workings of what law enforcement deals with. I would encourage any of you to seek out a Citizens' Police Academy hosted by local law enforcement as well. You should specifically seek out some Firearm Training Simulator training to see how you would handle a critical incident.