Im not really saticfied with the explaination to why Itachi killed the whole uchiha clan. i think the uchiha's wanted power in any way possible to have more influence on the village. when itachi got strong and was the leader of the ANBU the uchiha clan tried to use him but he did not like what they tried to do and killed them, the village didnt know what the uchiha's wanted and blamed itachi and he became a missing nin. dont come and say that the only reason why im saying this is because i dont like sasuke but thats not the case. i dont believe in that itachi did it just to test his strength there have to be some hidden truth behind the uchiha's.