1. We don't know the whole story. Tobi lied about the Fox attack, he also lied about the Uchiha massacre. Do not believe everything that comes out of his mouth.
2. Uchihas were missing during the Fox attack which is an obvious sign of betrayal considering that they were the "elite" forces of Konoha. Please also keep in mind that the person who controlled the Fox possessed a Sharingan where Konoha had access to 100s of Sharingans but none were present at the time of the attack. Suspicious no?
3. What Itachi did, what Danzo and the elders planned was not right but it did prevent an all out war.
We don't know how Uchihas were treated. By the looks of it, they were almost feared for their abilities but respected as being top class shinobis. Did it look like they were isolated from the rest of the village? Did the Uchihas look sad or miserable? NO. From my perspective, it seemed that the Uchiha did plan an uprising and what happened to them not only prevented a war but also prevented the Uchiha name and reputation to fall.
Sasuke should have been killed on the day of the massacre, leaving him alive just destroyed the mission. Now he's a top class criminal. Allow me the list
some of the wrong paths he chose.
1. He betrayed his own village who kept him safe after the Uchiha massacre.
2. He joined up with a well-known criminal and a missing-nin, Orochimaru. Oro is famous for causing the 3rd Hokage's death. He's also famous for wanting to destroy the Hidden Leaf.
3. He attempted to kill Naruto, Yamato, Sakura and Sai.
4. He killed his own "ally" Orochimaru and picked up Jugo, Suigestu and Karin so he can put them to good use.
5. He fought Itachi and supposedly won. Thinking he had killed Itachi, his mission for avenging his clan was completed or so we thought. His crying had only begun.
6. Now, he had a choice to here to go back to the village and be hailed as the avenger he was or join Akatsuki, the organization that was famous for being infamous. He joined up with Akatsuki

.
7. He invaded the Hidden Cloud attempted to capture the brother of the Raikage and even went as far as to kill a Cloud nin.
8. One failure after another, he decided to just **** it and kill Danzo. He interrupted the 5 Kage meeting at the Kage Summit with Zetsu and went as far as to attack all 5 Kages, handicapping the stupid Raikage in process. He failed, Tobi saved him.
9. He betrayed both Jugo and Suigestu for his "revenge".
10. He killed Danzo with the help of Karin and Tobi who I have to say saved his life. It would have been a tie and both would have died if Karin wasn't present to heal her love and if Tobi was not there to teleport Sasuke out of Danzo's seal.
11. He betrayed another person close to him since she was no longer useful. Karin was almost killed.
12. He attempted to kill Naruto AGAIN, would have killed Sakura and tried to kill Kakashi. At this point, we clearly saw that Sasuke was mentally ill.
13. He wants to destroy the Hidden Leaf and everyone who resides within, especially Naruto.
I think this clearly shows the transformation of Sasuke from a good character to a piece of shit. All he does is cry about things. Please don't give me, "Sasuke had a tough life" bullshit. Almost every character in Naruto had a tought child hood. They're not as ****ed up as Sasuke. There is no hope for him and no place for him on the good side. He deserves death just like all the criminals in the Naruto universe. What makes him so special? The only logical explanation I can think of is that Naruto is madly in love with Sasuke and will never let him go.