User blog comment:HanataSanchou/Diez Drake/@comment-15667295-20160308190047/@comment-24850639-20160308222934

Yeah morality and good vs. evil is a big theme in this series. I think one of the biggest draws of this series is that Oda has created a grey area in morality where things are SUPPOSED to be black and white. The Marines are SUPPOSED to be good by default, but here we have this absolute justice vs moral justice model. Pirates are technically supposed to the bad guys by default, but over the course of the series we've had to consistently ask ourselves which side is which. Dressrosa is really where it came to a head: you had Fujitora pissed at the WG for trying to play God, and Viola flat out calling their justice fake while at the least the pirates were sincere. The Supernovas are an interesting bunch, you have Luffy wayyyy over on the good side, Kidd wayyyy over on the bad side, while people like Apoo and Drake seem to be walking the line.