New York Times article.....US State Dept warning

I have not been to Zihua/Troncones in several years, but have always had a safe and delightful visit. This mornings' New York Times has an article about the shooting of a father, 14 year old son, and an uncle in Durango state. The state of Guerrero is on the US State Department's Do Not Travel list. I think this has been the case during past times that I've visited. Can someone address the current safety and risks of violence relative to the past? I'm planning to be there in a month or so....I'll spend a couple of nights in Zihua, then head up to Troncones. Thanks, in advance!