Glenfarcias has suggested a good way to approach the question.
Is this supposed to be a complete sentence?
If it is, the nonviolent protest is the subject. What is the verb, telling us what the protest does?
If it isn't a complete sentence, please give the rest of the sentence.
I have a question myself: What does AB mean? "Highly AB effective" doesn't make sense to me.
Added: And a second question: Where did you see this, justenough?