The Catholics have labeled the Protestants non-Christian, the Protestants have labeled the Catholics non-Christian, they both have labeled Members of the Church of Jesus Christ of Latter-day Saints non-Christian and so on and so on. Basically people tend to label those who are not of their faith as non-Christian. Personally I believe that anyone who believes that Jesus is the Son of God and the Savior of the world are Christians. What we really don't agree on is the interpretation of scripture and the history of and meaning of many of the teachings and practices found in Christian History. I would bet that if we all went through the teachings of Christ, we probably all agree on over 50% of what we could list. Certain teachings, differences, meanings, and practices are what separates us from coming to a unity of the faith. An example of this is that members of The Church of Jesus Christ of Latter-day Saints believe that Old Testament prophets were not living in sin when living Polygamous marriages and that they were accepted by God. We also believe that God restored this God accepted practice for a period of time back in the early days of the church. Other Christian sects don't agree with us on this doctrine. Another example is why Protestants originally broke away from the Catholic church over issue of the Catholic doctrines. What I have read is that they broke away primarily because they thought the Catholics strayed from the doctrine of being saved by grace alone. Catholics hold that because they came before other Christian sects that they are the original church of Christ. There are many arguments between the many Christian sects that keep them all apart. Latter-day Saints argue that the original Church of Jesus Christ fell into apostasy after the murder of most of the Apostles of Christ and that the church needed to be restored. We believe it was restored through the Prophet Joseph Smith. So disagreements over who holds the truth and who has the true church has been going on for over a thousand years. This why everyone points to the others and not being Christian.