He is, why? Because:
. He killed his clan just he was ordered to do so by his the Konoha elders. They told them that Uchiha clan is going to attack Kohana and he didnt even try to know whether that is true or a lie, just killed them all.
. Lied his brother, that tobi is madara. Lied that madara killed his bro, saying this all without a proof is very bad and can be considered as a liar.
. Said that he loves Sasuke, while he is the only one who hurts Sasuke
. Tried to capture Naruto
Any other reason? I will try to remember.
. He killed his clan just he was ordered to do so by his the Konoha elders. They told them that Uchiha clan is going to attack Kohana and he didnt even try to know whether that is true or a lie, just killed them all.
. Lied his brother, that tobi is madara. Lied that madara killed his bro, saying this all without a proof is very bad and can be considered as a liar.
. Said that he loves Sasuke, while he is the only one who hurts Sasuke
. Tried to capture Naruto
Any other reason? I will try to remember.