Narrated ‘Abdullah bin Umar:
Allah’s Apostle said, “A Muslim is a brother of another Muslim, so he should not oppress him, nor should he hand him over to an oppressor. Whoever fulfilled the needs of his brother, Allah will fulfill his needs; whoever brought his (Muslim) brother out of a discomfort, Allah will bring him out of the discomforts of the Day of Resurrection, and whoever screened a Muslim, Allah will screen him on the Day of Resurrection . ”
[Sahih Bukhari, Volume 3, Book 43, Number 622]
Of course, this will beg the question: How can Islam expect us to be tolerant of those among us who oppress? A basic understanding of Islam will lead us to remember that Islam expects us to help each other by “enjoining the good and forbidding the evil.” As such, the reasonable thing to do is to rehabilitate those among us who are given to oppression. And since I read further down the list of ahaadith, I found the following:
Allah’s Apostle said, “Help your brother, whether he is an oppressor or he is an oppressed one. People asked, “O Allah’s Apostle! It is all right to help him if he is oppressed, but how should we help him if he is an oppressor?” The Prophet said, “By preventing him from oppressing others.”
[Sahih Bukhari, Volume 3, Book 43, Number 624]
Looking around the Muslim world, we see that this is easier said than done.