By a feedback loop, do you mean a process whereby uses of violence are likely to provoke violent responses, making everybody less willing to compromise? If so, then I entirely agree that this is worth examining, and I wish I could figure out what I said that makes it seem like you think you are saying something I'd disagree with.
Ah, interesting. I was about to examine why I disagreed with you, but upon seeing your comment again, I realized I'm not disagreeing. I understand your comment and agree with it insofar as it is written, but there is much more to say about this than where your comment ends. It's not that I disagree with the content, but the implications that arise from it having been stated the way you stated it.
This chain is basically like this:
Max Abrahms, "The Credibility Paradox: Violence as a Double-Edged Sword in International Politics," International Studies Quarterly 2013.
I found this via Bruce Schneier's blog, which frequently features very valuable analysis clustered around societal and computer security.