Because that doesn’t contradict your previous statement, and also very true. If you, as you seem to be, promote violence as the first and only effective action, you will achieve nothing except you will get a lot of people killed. Violence should be measured, smart, not the first response.
If you permit me some bluntness, Americans, for all the talk they like to talk, are political virgins. They don’t understand the reason for protesting, and what differentiates a walk in the part from a political action. They don’t understand the nature of community and how it regards to politics. They don’t understand how the politicians are made and how elections work, they don’t have even semblance of a coherent idea of the better future. They only know guns, but like, in theory, they believe that if guns start shooting, something good will happen, despite constant evidence to the contrary, but there is no more thought behind that.
You’re not ready for violence, you don’t know how, when, and why to use it. Try to have a political movement that at least half of the country ever heard of, and which didn’t succumb to the infighting in the first week, then you can start thinking about how to use it.
Right now you have nothing, and no amount of fantasising about urban war will change it.