It's kind of ridiculous to assume the Uchiha Clan were behind the Kyuubi attack

[TrollingSage]

But how is a whole clan able to put 1 entity in a genjutsu to do that?

They didnt think the whole clan literally put kurama in a gen jutsu. They thought the whole Uchiha clan planned the attack

 

[Beans2]

Obviously people had good reason to believe the Uchiha were behind the attack. They literally saw that the Kyubi with a sharingan in his eyes, meaning he was being controlled by a sharingan genjutsu.

 

[Darth Uchiha]

They didnt think the whole clan literally put kurama in a gen jutsu. They thought the whole Uchiha clan planned the attack

I'm sorry, but, what the heck is up with your sig?

 

[UltimateDeadpool]

But how is a whole clan able to put 1 entity in a genjutsu to do that?

Nothing saying they did, but it appeared as if they knew not to be in the village that night. That made them look like conspirators.

I have always wondered why the Uchiha were all absent that night, without anyone knowing where they were.