I bought a T-shirt like this off of Amazon for twenty bucks the other day. I hope it will open up some conversations. 
Now, because some people see the worst in everything, I'll just qualify this by saying that we are commanded to love our neighbor, but that doesn't mean, nor does the shirt imply, that we approve of sin or behaviors that are immoral, it simply means, as it says, we are to love all, and if we do, maybe we will have an opportunity to share our faith.