I'd like to start by saying that I found the application of NVC in my life to be highly rewarding and highly recommend reading this book if you're not familiar with the practice

I found the chapter on political strategy naive and a bit reckless in the context of questions on the use of violence being the major dividing issue in social movements since at least the 50s. If you're open to reading a very comprehensive damnation of anti-violent strategy (in favour of a diversity of tactics), I recommend you Peter Gelderloos: How Nonviolence Protects the State