And obey Allah and the Messenger that you may obtain mercy.

Origins of this sect

http://www.ahlelbayt.com/articles/history/origins-of-the-shia-sect

Sahabah

“The Shia paradigm is based on slandering the Sahabah, the friends of the Prophet of Islam. Using a process of disinformation, the Shia will portray the false idea that the Sahabah were involved in oppressing the Ahlel Bayt, in particular the family of Ali ibn Abi Talib (رضّى الله عنه). The historical narrative of the Shia is based on this lie, and here we defend the Sahabah and show that they were lovers of the Ahlel Bayt.”

http://www.ahlelbayt.com/category/articles/sahabah

Shirk

The SHIA have exalted their Imams–including and especially Ali (رضّى الله عنه)–to a level of Shirk (associating partners with Allah). The Shia have granted their Imams a status of gods amongst men. Islam was sent to destroy Shirk in all its forms, and Shirk is considered by Allah to be the gravest of sins.

Who Invented Shirk?

The people of Prophet Nuh (عليه السلام) were the originators of Shirk in the form of idol-worshipping. We see that the Shia have fallen into all the same traps as these people did. The Shia have erected shrines for their Imams and saints. They put up pictures of them and they invoke their names in prayer. Some even do Tasbeeh to their names. They ask their dead Imams and saints for special favors and believe in Waseelah through their Imams and saints.

http://www.ahlelbayt.com/category/articles/shirk