We have been advised in the Qur'an that goodness and evil are not
equal. Therefore we should return good for evil (41:34). This has
been expressed repeatedly in the Qur'an in different wording.

This means that believers should always react positively. At all
events they should refrain from negative reaction. Their behavior
should be proper, not only in normal circumstances, but also in
abnormal circumstances. That is, even when any group displays bad
behavior, it is still incumbent on the believers not to display a
retaliatory mentality. At that moment, too, they should prove to be
men of principle. They should maintain their good behavior, even in
the face of bad behavior from others.

Interpreting this verse, Abdullah ibn Abbas comments: `God has
commanded Muslims in this verse, even when they are angered, to
resort to patience and tolerance. Whenever anyone shows any signs of
ignorance or a biased mentality, believers should adopt the path of
tolerance and fortitude. And whenever anyone displays bad behavior, 
believers should forgive him.

This Islamic course of action may be described as positive behavior.
That is, opting for moderation instead of retaliation. Whatever the
attitude of others may be, believers should always remain true to the
highest Islamic standards of human character.

A believer is one who begins to lead his life in accordance with the
higher realities; the level of whose thinking is above that of
ordinary human beings. Such a person comes to have a limitless
capacity for tolerance. His inner-self is so deeply immersed that in
peace, no outward event can disturb his emotional balance. He takes
pity on those who are easily angered. Where ordinary people become
provoked, he remains blissfully serene.