Evil can and does arise from people trying to do their best to make the world a better place. To say that the program isn't evil because it's trying to save lives is incredibly dangerous.
At the risk of triggering a Godwin, let's all recall that Hitler rose to power "trying to defend the country from terrorism". We probably don't have any nascent Hitlers, but we certainly have people who will abuse power if they get it, and ignoring people with good intentions will make them impossible to detect.