One of the best articles I've ran across on speaking out against Mormons by Anti-Mormonism was mostly indented to be a rallying cry to the troops of the Countercult Movement to get into action. It was written by two respected Evangelical scholars. Their article 'Mormon Apologetic Scholarship and Evangelical Neglect: Losing the Battle and Not Knowing It?' is an amazing piece of writing but lays out precisely what the Anti-Mormons are up against. So in essence it is saying, know they enemy...and in this case it is the Mormons. Being a Mormon I was quite impressed by this article how it laid it all on the line of what the true dilemma really is. The Mormons are winning the the Countercultist are oblivious to what is really going on. You be a judge for yourself:
Mormon Apologetic Scholarship and Evangelical Neglect: Losing the Battle and Not Knowing It?
Carl Mosser and Paul Owen
1997 Evangelical Theological Society Far West Annual Meeting