"Loving our Enemy" is a concept that doesn't resonate with most people because we can easily say "I don't have any enemies". If the verse were translated to "Love people who do things that you don't like and you think to yourself 'your dumb'", then we would identify a lot more people in our lives who fit that description. Our enemy may not be someone we are "fighting" with but may be someone who we are in disagreement with and find fault with. We need to love them too.
Lord, help me to identify those in my life who I have a "hard time" with and help me to love them.