Are Christians Christians?

We've all heard the question and headlines. "Are Mormons Christians?" Headlines, articles, ranters and ravers all ask this question. Truth be told, it's an intriguing question from the lay-Christian's perspective. Truth be told, the very question is an amusingly anti-Christ one.

What is a Christian? Merriam-Webster says it's "one who professes belief in the teachings of Jesus Christ." So...either the belief in the teachings of Jesus Christ do not include the living of His word, or it means that His teachings somewhere included the derision and ravening condemnation of those who don't believe His teachings.

Where did He preach the derision of others and their beliefs?

Where did He teach the ostracizing of those that believed differently than they?

Where did He suggest that it's alright to whisper behind the backs of others and denigrate their beliefs to their victims very children?

I'll leave it there, but the questions go on and on.

If you're "Christian," how about an attempt at acting like you believe in His word and allow others their beliefs? Or are you just not Christian enough?