"The Shi'aa religion essentially revolves around this theme of hatred."
Sounds like a generalization there "LoveBeingAMuslimah".
The majority of the Shi'aas = the twelver Shi'aas. And they hate many of the sahaabah.
The Zaydi Shi'aas, one of the few (if not sole) groups that don't proclaim hatred of the sahaabah (nor commit shirk), are a very tiny percentage.
The majority of Shi'aas hate (and often say "may the curse of Allaah be upon him/her", a'uthobillah, following their names) Abu Bakr, 'Umar, 'Aa'ishah, and Mu'awiyah (may Allaah be pleased with them). Is this not hatred of those righteous people?
The Shia scholars believe that the Mehdi will come and exhume the body of Aisha (
رضّى الله عنها) in order to flog her for her sins:
“When the Twelvth Imam returns, Aisha will be raised from the dead so as to be whipped as due punishment.” (Al Shafi, Vol. No. 2, Page No. 108) And:
“When the Twelvth Imam returns, he will bring Aisha to life so as to torment her.” (Haq-ul-Yaqeen, Page No. 139) As well as:
“Imam Mehdi will punish Aisha with stripes.” (Hayat-ul-Quloob, Vol. No. 2, Page No. 901) Mullah Baqir Majlisi says:
“When Imam Mahdi arrives, Aisha will be resurrected so that she may be given a prescribed punishment and that Fatima be vindicated.” (Mullah Baqir Majlisi, Haqqul Yaqeen, p. 347)
How dare they speak of the favorite wife of the Prophet sal Allaahu 'alayhi wa sallam this way?
And here's a link about cursing the wives of the Prophet and the sahaabah:
Ahlel Bayt » Articles » Grand Ayatollah On Cursing the Prophet’s Wives/Companions and Taqiyyah
But, anyways, I meant that is one of the themes (hatred of these amazing companions).