I feel that the tenent "stay your blade from the flesh of an innocent" is mostly ignored in AC revalations. [Spoilers]

I can think of 3 instances where Ezio's (or his apprentices') actions directly cause the deaths of innocents and little time is spent on the fact and nearly no repurcussions come of it. First is during one of the assassin recruit missions they accidentally assassinate the wrong target allowing the real target to flee. The recruit is told to carry the body to the river and the shame will last forever however the recuit still becomes a master assassin upon completion of that task. The second is Ezio killing Tarik, I feel nothing comes of this and the blame is sorta pushed to the person who mistook Tarik for a templar and ordered the killing. That one I kind of understand as Ezio couldnt really know but I feel more shouldve been said on the matter. And finally in Cappadocia Ezio says he plans on blowing up the weapons depot, he is then warned of what would happen if he does. When he does blow the depot the smoke absolutly kills at minimum dozens of innocent people, as you escape through the streets people fall off of balconies to their death constantly and he helps noone? And again, nothing ever comes of this? Am I wrong in thinking this or do you guys have other thoughts on the matter?