You do not have to be cruel in order to be kind.
What does this mean?
Kindness is the fruit of the spirit. When exercised with self-control, it can be used as a way of defeating the enemy. Why? Satan specializes in cruelty and utilizes fear to control people. There can be no end to his persecution unless kindness within the parameters of self-control steps in to stop his wickedness.
But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness – Galatians 5:22 (ESV)