. He let Danzo operate in the shadows because he also felt what Danzo was doing was necessary for the village, he just couldn't bring himself to do those things. He gave the all clear for the Uchiha massacre and he knew about Danzo.
which means hiruzen is complicit in mass murder, brainwashing and other such evil atrocities.
he gave the all clear for one of the worst acts of mass murder ever.
the Uchiha massacre was on both sides head, the uchiha was just as wrong as Danzo, they were planning coup,that would have caused a lot of innocent lives to be lost and other villages could have seized the moment and destroy the leaf complete. they were a threat to the village and the Anbu black ops serve the purpose it was established for.
the uchiha massacre could have been resolved easily had hiruzen and danzo not brought them to that. they were plannign a coup which, depending on how it was done, could resolve it with minimal loss of life.
other vilages wouldnt sieze any chance to invade. they didnt care about konoha or what went on there.
they were a threat to the government amd to save themsleves they killed uchihas.
the village willbe destroyed just as easily when they lose their strongest clan overnight, and enemies still think nows a good time to invade.
- notice how the first two points start with "behind his back", now the Uchiha massacre/situation was too complicated/nearly impossible to avoid, the Uchiha clan's existence in the leaf was like a time bomb and planing to overthrown the village to take over was inevitable (it's no one's fault really).
it was easily able to be avoided. hiruzen was just too blood hungry to think of another way. uchiha clan was exterminated in the worst atrocity in history besides obito and akatsukis actions
- Danzo's role/decisions were necessary weather you like it or not (even if he sometimes use extreme measures), keeping the village safe/stable without using questionable methods is almost fictional, besides like you said it was "behind his back".
danzo was a crazed evil sociopathic monster. his deicsions were brutal beyond belief, and the opposite of ncessary.
the village is ten times less safe and stable because of his insane actions.
Danzo was the one who wanted the uchiha to be "stopped" Hiruzen wanted another way but the the other village elders disagreed.
then he should have executed the elders for treason and plotting to commit genocide.
yes but he didnt let a akatsuki member invade his village and flatten it neg diff then depend on a kid to save the village
tsunade didnt let pain invade. he just did it.
and yes hiruzen did. he let obito walk in, and depended on minato to save the city