Following the Demon Fox Attack of Konoha, Konoha's leadership began to suspect that an Uchiha was behind the attack, as the Sharingan was the only means of controlling the Nine-Tailed Demon Fox. In order to keep an eye on the Uchiha, they were forced to live in a small corner of Konoha, creating dissent within the clan, and increasing the hatred that have been planted since Tobirama Senju had created the Konoha Military Police Force to keep the Uchiha from governing the village. When members of the clan began planning a coup d'état, Itachi Uchiha was tasked with spying on Konoha from within the ANBU. Instead, Itachi's pacifistic nature made him become a double agent and provided Konoha with information on the Uchiha, knowing that if the suppressed, but powerful Uchiha attacked Konoha, it would create a full-blown civil war within the village, and this weakness within the state would cause other countries to take advantage and lead to a Great Shinobi World War. As the Uchiha came closer and closer to a village-wide revolt, Hiruzen Sarutobi tried to open negotiations with them, but time ran out and Hiruzen's advisers ordered Itachi to wipe out his clan.[1]
Prior to the massacre, Itachi confronted Madara Uchiha, who had infiltrated the village. Madara, having decades earlier been shunned by the clan, still held resentment for it and Konoha. Itachi offered Madara the chance to help him wipe out the clan, in exchange for promising not to attack Konoha, a deal which Madara accepted. It was also during this time that Madara met with Danzō Shimura; the circumstances of this meeting are unknown as they had not met again since the Kage summit.
The Uchiha clan was not completely blind towards Itachi's double agent status. They had suspected him several months after joining the ANBU due to his change in behavior. They sent Shisui Uchiha, Itachi's closest friend, to keep an eye on him, but Shisui ended up seemingly committing suicide by drowning. The clan suspected that Itachi had something to do with this death, including the possibility of forging the suicide note. Because of this, along with Itachi acting as though entering the ANBU was nothing special, the clan becomes antagonistic towards Itachi. Indeed, Itachi had murdered Shisui to obtain his Mangekyō Sharingan and forged the suicide note. However, he denied it at the time, and due to his mission of stopping the revolution being secret, he acted as though he was losing faith towards the clan due to them being bound to rules and bonds, and started to disrespect everyone. Even Fugaku, the clan head and Itachi's father, had lost hope in Itachi altogether, and the two had a falling out.
The Uchiha Clan is the most well known and most powerful of clans. They are based in the Leaf Village. Their traditional clothing consist of a fan (clan logo) on their back clothes. Their clothes are rather dark in color, high neck shirt and long hair. They are small individual who carried an Bloodline, called the Sharingan. The Sharingan is able to replicate any ninjutsu and taijutsu once it has copied it. The clan secret meeting place is located in the main temple of the Nakano Shrine, underneath the 7th tatami (from top) mat on the far right side. Also found in here is the family secret, the Uchiha eye technique, Mangekyou Sharingan. They head the Konoha Police Force. They have a special tribute, that when an Uchiha has master the Katon: Goukakyuu no Jutsu (subject to change), that individual is no longer consider an child but an adult. This is a very peaceful clan with no war history with any villages or clans or political affair.
The most outstanding Clan in Leaf Village, the Uchiha's advanced bloodline give them the ability of the Sharingan. This ability allows Uchiha to be able to perform other's Jutsu just by having once witnessed it in use, as well as the ability to anticipate what a person may do next, and see through GenJutsu among other things.
