It would be far more constructive if people tried to understand their supposed enemies. Learning to forgive is much more useful than merely picking up a "stone" and throwing it at the object of one's anger, the more so when the provocation is extreme. For it is under the greatest adversity that there exists the greatest potential for doing good, both for oneself and others.
Every time you forgive, you dissolve a condition you have placed on your own capacity to love. Every time you forgive, love is awakened in you more deeply and your capacity to extend love is increased. That is the nature of the journey.