Police brutality has been around for decades. The advancement of technology that has made the world so much smaller in a sense is just making it easier to shine a light on such an important subject. It also gives power to the people. You don't have to just stand their if you are around in a case of police injustice. You now have a voice. It is legal to video tape police in 47 states.
With the weight of the world's conscience behind outrage over the death and non-conviction, now you begin to see why there is a problem. If there is no fear of public perception, if there is no fear of repercussion in the brightest of media spotlight--what chance do individuals on dark streets have of being safe? Of having justice?
Chicago Judge Richard Posner argues that taping cops brutalizing citizens prevents the officers from "doing their job" and invades their privacy. Description from men4sale.blogspot.com. I searched for this on bing.com/images
'Just like Trayvon Martin, race mattered for Amadou Diallo, Oscar Grant, Sean Bell, Emmett Till, and [thousands] more we will never know the name of who died because of their skin color." ~ Angela Davis [click on this image to find a short video and analysis of racism in the criminal justice system] Source: Operation Ghetto Storm (http://mxgm.org/wp-content/uploads/2013/04/Operation-Ghetto-Storm.pdf)