Zetas Cartel frees kidnap victim following the threats from Anon.As the article points out, chances are that the Anon threats may very well have had almost nothing to do with said release, but the dangerous game is actually heating up rather than cooling down. The cartel in question warned that for every name released among the cartel, ten people would die.
Personally... hit it. The Cartels aren't going to just cease to exist at some arbitrary point in the future. They'll go on until someone stops them. The exact means to do this is of course up in the air, but it's apparently not happening at this point. If Anon provokes them into severe enough violence in the US and Europe, the major players in the world will soon have no other choice than to allocate serious resources into taking the cartels down.
The violence and deaths will still be there. This way, though, it might just be a short-term amount of violence followed by significant enough response from the rest of us instead of a prolonged and unending parade of violence and death stemming from the cartels.