About sunni believe?

I'm so surprised that sunni people r so ignorat of the Islamic history. It is mentioned 6 time in bukahri about Umar/Amu bakr's attitude toward prophet(saw) daughter(PBUH). But, they still follow these sinners. And top of that ignore the truth that Ali(PBUH) was the rite1after Prophet(SAW). THe funny thing is people have always tried to hide the sign of Hazrat ALi's birth by putting a black cloth over the kaaba. Nowhere in quran or in hadths it is mentioned to put anything over Kaaba. But the Wahabhi gov't of Saudi arabia do it every year. Another funny thing is Uthman was buried in a jew cemetry cause he was not considered a muslim. one more thing Umar's uncle married his own mom...haha(this is not mentioned in Bukhari but on wikipedia) In bukhari there is also mentioned pen n paper story. I'm pretty sure, most of the people ignored that aswell. Umar n Usman n Abu bakr r probably in hell rite now waiting for their friends like Dr. Zakir nayak n many others.ONE more thing it is also mentioned in Bukahri that Without the signature of Hazrat Ali (pbuh) noone will be able to entry the heaven.So y believe in these s??? No one saw their true color untill Prophet's (SAW) death. No matter how many stories Saudi Arabia try to fabricate. Truth will nvr change .