They intend to deceive you

But if they intend to deceive you – then sufficient for you is Allah . It is He who supported you with His help and with the believers. And brought together their hearts. If you had spent all that is in the earth, you could not have brought their hearts together; but Allah brought them together. Indeed, He is Exalted in Might and Wise.
Quran 8:62-63
The Ummah today suffers from dissensions and fragmentations that shook it to the core and left it weak and confused. There are, of course, many reasons for these conflicts and attempts to unite Muslims must address all of these. One of the main reasons are the obstacles created by our spiritual malaise. Only when the hearts come together, can the bodies too. When the hearts are aligned, free of hatred, jealousy and arrogance, they can easily accept the truth and admit their mistakes. But when the hearts are diseased and flawed, they will ignore, nay bury the truth for personal and material gains. A lot of our disagreement today are not born out of ignorance but from the unwillingness to follow the truth even after it has become clear.