Study of 911 call rate, after police beatings/shootings

[TheVat]

In the NYT, 2 sociologists discuss the results of their study that showed sharp drops in police calls to 911, following publicized police violence against unarmed citizens.....

[This article contains both research results and interpretations that should be considered opinion (hence, its placement in the opinion section of the paper]

http://www.nytimes.com/2016/10/01/opinion/why-dont-you-just-call-the-cops.html

Do you agree with this? Is the current level of police violence against unarmed citizens, especially people of color, undermining confidence in our police forces and leading to under-reporting of criminal activity in minority communities?