What is Shia view of Umar?

Umar ibn al-Khattab was one of the earliest figures in the history of Islam. While Sunnis regard Umar ibn al-Khattab in high esteem and respect his place as one of the "Four Righteously Guided Caliphs", the Shia do not view him as a legitimate leader of the Ummah and believe that Umar and Abu Bakr conspired to usurp power from Ali. This belief arises from the incident of Saqifa as well the hadith of the pen and paper. Shia believe that the Sunni view of Umar was created by the later Umayyad dynasty to honour the man that gave power to the first Umayyad ruler and third Sunni Caliph, Uthman. In this way, it gives legitimacy to Umar's consultation that started their own dynasty. Shia believe that the Umayyad view was propagated with lethal force and heavy duress and as time went on, that view became predominant and was cemented by the works of Bukhari.