Galatians 5:13-14

For, brethren, ye have been called unto liberty; only use not liberty for an occasion to the flesh, but by love serve one another. For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself.

Love is the most important thing in the world today. Without love we cannot be a follower of Christ. We are supposed to love everyone, just not the people that agree with us. Even our worst enemy is still a child of God. We might not agree with them, and they might not love us, but we must love all of mankind and treat them that way.