"These are shadows of people that I've managed to imprison", she responded before looking at the said-shadows that we're walking or flying around them, venturing around the hallways of the Puzzle. "These are the ones who don't have the right to go back to their hosts, after they've managing to blind them from who they are", Shadow looked back at Yugi with a sigh, almost ashamed of doing such a deed, but having to do it for their own good. "You can't pity them for their actions, Yugi; they show no remorse in what they do. All they desire is chaos and misery within your world, nothing more. This is the punishment for their acts of discord". 

If Yugi defends this and shows pity, Shadow knew for sure that he didn't know what these shadows were capable of.