I am not for or against any project in particular although I am a fan of zcash, I was not happy with the way the project was released. To be honest I wish they had done an ICO with all the negativity that comes with an ICO, they would have done much better than what they did. I think zcash will recover from that mistake eventually. In general anonymous transaction projects have big hurdles to overcome, and the stigma that they are associated with criminal activity has to go away. Why dark markets, why not just simply having the privacy of conducting business on the blockchain, these dark markets are a disease for these projects. Being able as a business to conduct your transactions on the blockchain without your competitors being able to spy on you is good enough. I think law enforcement should focus on the criminals and not the technology, same way they leave Big Pharma alone when they manufacture billions of drugs that get abused all the time.