Forum:Is murder taken too lightly?

Why isn't the council doing something/more to tackle shady organizations, especially mercenaries who kill? Also, isn't it weird how Shepard would just go in and kill everyone instead of capturing them and putting them in jail? I know it's much harder to capture someone alive than to kill them outright but Shepard has never made the effort to capture. For example, when Helena Blake 'hires' Shepard to kill her two partners, Shepard just went ahead to kill them. Maybe it's because these people are outside of council territory and sovereignty? Maybe, it's because Shepard is above the law but isn't a paragon Shepard doing the opposite of what s/he preach? Just confused. Thanks!