So, I just saw this, and after recovering from Kelly Thomas's plaintive cries for mercy, I began to rethink my position on the police. I do not think the use of violence is justified. Seriously.
Using guns to fight guns clearly leads to more gun violence. Whilst I accept that the police are needed as an institution in modern society, to protect rights and property, I think they have changed from our guardians to our controllers. As Occupy Wallstreet protests have shown, they are now being used by their leaders to supress legitimate political criticism. Note that I am not blaming the individual police officers (except in the case of the video I embedded), but the institutional mentality of the police.
The idea that the police all have to back one another up, no matter the circumstances, is leading to diminished trust in the police, and so people may resort to violence to achieve their goals.
At the moment, it is practically self defence.
Anyway, sorry for the wall of text. Any of you have ideas/opinions on this topic?
EDIT: Place where I found this [http://reason.com/blog/2012/05/08/the-da-just-released-surveillance-footag]