Marada & Izuna & the Uchiha Clan
The other day, I was remembering Sasuke and Itachi's battle, and how Itachi lied yet again to paint the Uchiha as villains.
He told Sasuke a false story about Marada and Izuna, which proves his undying hatred and resentment towards his people.
In Itachi's illusion, Izuna looks completely different from what Hashirama and Tobirama remember. Izuna is actually a copy of Sasuke (or, more accurately, Sasuke is a copy of Izuna). Both Hokage point out this. But Itachi didn't know this, which is why Izuna doesn't look as he should.
2. The lie that both brothers killed their friends to awaken the Mangekyo Sharingan and take over as clan head. Madara and Izuna were the sons of the Uchiha clan head and have always held power. The brothers didn't kill their friends. The Uchiha wouldn't tolerate kinslayers leading the clan. It's a desecration of the bloodline and also a risk of betrayal. "Today he kills another. And tomorrow the entire clan" (really, Itachi? Are you judging by yourself?). I'm sure both brothers awakened the Mangekyo Sharingan after the death of their father, Tajima Uchiha. That's why Madara took over as clan head. I also considered the death of their mother, perhaps a mutual friend or close relative (a cousin, for example). But more likely, their father's death influenced the brothers and their awakening of the Mangekyo Sharingan.
3. The lie that Madara forcibly took Izuna's eyes and the lie of Izuna's death. Itachi should have known how Madara's younger brother died. He was the clan heir, and he should have known the history. We know that after Shisui's death, Itachi was stripped of his right to inherit power, and Sasuke was to become the next clan head. But Sasuke was little and hadn't yet been told about Madara. Itachi deliberately glosses over the fact that Tobirama killed Izuna. He shifts this sin onto Madara's soul. Izuna willingly gave up his eyes before his death. He loved his clan and his brother and wanted to protect them.
4. The Uchiha didn't engage in fratricide. Only in the anime were we shown that the Uchiha killed each other for power, and it was exaggerated, like something out of a propaganda textbook and the Overton Window theory. Perhaps there were such criminals, but they exist in any nation. But this was only the exception. As Hashirama and Tobirama said, the Uchiha value family and love—they weren't kin-killers. If this were true, the Uchiha wouldn't have been so organized and wouldn't have survived as a clan.
5. Itachi said that all the Uchiha took their brothers' eyes to awaken the eternal MSH. But this is a lie. In that case, the Uchiha would have had the same slave-like segregation within the family as the Hyuga. Younger brothers would have been born and used as "spare parts." But that's not the case. This means no one forcibly stole eyes. The Uchiha loved each other and didn't wish suffering on their siblings or other relatives.