Believers should be kind to the unbelievers who are not hostile to them!

Verses 8-9 of Chapter 60:

Allah does not forbid you to treat kindly and act equitably towards those who have neither fought you in the matter of religion nor driven you out of your homes. Indeed Allah loves the just. He only forbids you to take for friends those who fought you in the matter of religion, and drove you out of your homes, and cooperated with others in your expulsion. Those who take them for friends are indeed the wrongdoers.