You have to admit there were more "civilized" ways of ending WWII as well, werent there... but it was effective and is acceptable to you because of the context. You believe, and rightly so, that lives were saved.
The same is true of Pinochet and Chile.
Probably, but I also believe that using aerial bombing in warfare is different from using death squads and the tactics that Pinochet used. I think that's the majority of opinion, too- it's more humane to bomb during wartime than to round up innocents, falsely charge them, and kill them.
I'm not saying that all of the 3000 were innocent. But some were. And they died because of Pinochet's tactics.