The Bible declares that we who follow Christ should be just as much in love with each other as God was in love with us when He sent His Son to die on the cross. The moment we come to Christ, Scripture says, God gives us supernatural love that is shed abroad in our hearts by the Holy Spirit. The greatest demonstration of the fact that we are Christians is that we love one another. Why not go out of our way to be a friend to someone whose skin is a different color from ours? Love does more to solve our problems than anything else does. Of all the gifts God offers His children, love is the greatest. Of all the fruits of the Holy Spirit, love is the first.

God calls us to love the unlovable. Read more in this answer from Billy Graham.