click that link for more background history of these kinds of struggles in response to killings by police and some strategy (that I and others worked on).

There's also this transcript of testimony from family members of folks who've been killed by cops (and more): The transcript was submitted to the UN's committee on racism as well as the Oakland City Council (neither did anything with it, but it's important documentation).
--> Here is the link to the transcript (which I'd recommend reading through the index and only reading the parts your interested in, particularly Cathy King's voice): http://peopleshearing.wordpress.com/2013/01/22/full-transcription/
--> Here is the link to the video from that event. http://peopleshearing.wordpress.com/2011/02/25/video/