Islam Commands That Oppression Be Abolished

Muslims should never remain silent in the face of oppression that they witness, or even hear about secondhand. Their compassion, stemming from the morality of the Qur'an, directs them to oppose all tyranny, wickedness and oppression, to defend the oppressed, to wage a war of ideas on their behalf. Whether dealing with their closest friends or with strangers with whom they share no interests in common, they behave in a manner determined to prevent any such oppression. Rather, they seize on this opportunity to win the good pleasure of God and implement the morality of the Qur'an. Because a believer's conscience is so very sensitive, his compassion never lets him turn a blind eye to the slightest injustice or cruelty. He will take his place in the vanguard of that morality by avoiding any actions that might be unfair to or oppress anyone else. Whenever he sees anyone else behaving that way, his conscience gives him no peace until he's done everything possible to right matters. True compassion has no room for forgetting about oppression, ignoring it or underestimating it.
The ignorant seldom act until oppression stands at their very own doorstep. This stems from their forgetting or denying that in the hereafter, they will be brought face to face with all the good and bad deeds that they encountered in this world. But the faithful, well aware of this, will treat even total strangers he has never met with great compassion and seeks to rescue them from oppression. Even if no one else supports him, he will muster all his strength to forestall wickedness. Even though the majority may behave differently, their lack of conscience never rubs off on the true believer. In the hereafter, Muslims know, they will be called to account for what they did to prevent evil. They won't be able to get away with excuses like, "I didn't see it," or, "I didn't hear it," or "I never knew what was going on."
As is revealed in the Qur'an (19:80), "... he [man] will come to Us all alone," every human being will return to his Creator on his own. People will be brought into the presence of God, put to the trial, and called to account for their deeds in this world. Only those who followed the dictates of their conscience will come out of that questioning at all well. Those who have behaved well, opposed all forms of cruelty, fought evil, and remained on the path of God can expect a suitable reward. God mentions this matter in another verse (2:112):

All who submit themselves completely to God and are good-doers will find their reward with their Lord. They will feel no fear and will know no sorrow.