I wouldn't call the Narada's crew defenseless nor innocent. They all knew what they were doing and taking part in. It wasn't even a military vessel, so they were not there out of duty but rather they wanted to be there.
Besides would you risk your life and crew to save a group of people who just annihilated Vulcan, attacked your home planet, and killed many of your comrades? Talk about armchair heros: "I would do it only if I don't have to leave my chair or the relative safety of my home"
Besides would you risk your life and crew to save a group of people who just annihilated Vulcan, attacked your home planet, and killed many of your comrades? Talk about armchair heros: "I would do it only if I don't have to leave my chair or the relative safety of my home"