People are enemies of what they do not know.
الناس أعداء ما جهلوا
An-nāsu aʿdāʾu mā jahilū
Ali, Nahj al-Balagha, saying 172 (Subhi Salih edition, p. 501; saying 172 in the Abduh edition). Nahj al-Balagha is a compilation without chains of transmission by al-Sharif al-Radi (d. 1015).
The unknown frightens.
What is feared is met with hostility.
Ali does not say this to accuse.
He makes a diagnosis.
Most hostility is simply never having met.
Once you come to know, anger subsides.
That is why learning is also the door to peace.