Christians can live like that. We become so focused on fighting evil in our personal life and/or fighting evil in society that we can forget what is supposed to define us. We can like the fight. We can obey the rules and feel pretty good about it. We can argue about politics or about morality and get wrapped up in that. These are good things to do but there should not be what defines us.
John 13:34-35 says:
A new commandment I give to you, that you love one another; even as I have loved you, that you also love one another. By this all men will know that you are my disciples, if you have love for one another.How are Christians defined in today's society? By going to church. When people talk about Christians they typically use that as a definition. If you go to church at least once a month you are considered Christian. Again, it is a good thing to do. Christians should go to church. Yet that is not what we are supposed to be known for.
Let's get back to the text. What is new about this commandment? Didn't the Old Testament talk about loving God and loving your neighbor? The difference is Jesus gives Himself as the model for love. When does he do it? Right after He washed the disciples feet and right before He offers His life on the cross. In the context of these two events He says love others as I have loved.