Unfortunately, love and compassion have been omitted from too many spheres of social interaction for too long. Usually confined to family and home, their practice in public life is considered impractical, even naive. This is tragic.
The perspective of Love doesn't leave anybody out. Until your vision and compassion is big enough to include those who oppose you, you are simply contributing to the continuation of destructiveness . The end of separation is the salvation for all.
It is not enough to be compassionate. You must act. There are two aspects to action. One is to overcome the distortions and afflictions of your own mind, that is, in terms of calming and eventually dispelling anger. This is action out of compassion. The other is more social, more public. When something needs to be done in the world to rectify the wrongs, if one is really concerned with benefitting others, one needs to be engaged, involved.
If indeed the qualities such as love, patience, tolerance, and forgiveness are what happiness consists in, and if it is also true that compassion, defined as concern for others, is both the source and the fruit of these qualities, then the more we are compassionate, the more we provide for our own happiness.
We are beset by problems and if we look for their source, we find they arise because of our selfishness, because we tend to pursue our own interests at the expense of others. Our various religious traditions exist to help us reduce these problems. They all teach ways to overcome suffering through cultivating love and compassion, tolerance, patience and contentment.
Nothing shocks our moral feelings so deeply as cruelty does. We can forgive every other crime, but not cruelty. The reason for this is that it is the very opposite of compassion.