I actually agree that this is a problem in our church. After all, our belief system, if firmly embraced, demands a lot of personal sacrifice, and we often become hyper-defensive when we sense a threat to our faith.
Unfortunately, this often leads to irrational name-calling and blindly neglecting to differentiate between non-Mormons and anti-Mormons.
Of course, that's not to say anti-Mormons don't exist, or that it's unimportant to identify them. We just need to properly define the term.