Guide to the Perplexed

(1)  An anti-Mormon is a person who contends against Mormons or Mormon belief -- or, more precisely, against The Church of Jesus Christ of Latter-day Saints (either as a group of human individuals or as an institution) and/or against the doctrines taught by the Church.  The anti-Mormon is anti-Mormon because he or she is fighting against (and is therefore "anti") Mormonism.  Merely being for some other doctrine or church (whether Calvinist, Catholic, Buddhist or atheist), even if it conflicts with the LDS Church, does not make someone an anti-Mormon.  The salient feature is specific opposition to Mormons or their Church.

(2)  To be an anti-Mormon, one must do more than merely "disagree" with LDS theology and "voice" that opinion.  Presumably, most of the world's population "disagrees" with Mormon theology, as evidenced by the fact that most of the world's population is not LDS.  And a not insignificant number of those, if asked, would be perfectly willing to "voice" their "disagreement."  Any Latter-day Saint missionary can testify to that.  But passive and even sporadically uttered "disagreement" is a far cry from crusading, dedicated, energetic effort aimed at refuting LDS doctrine, stopping LDS growth, blocking the construction of LDS buildings, and other hallmarks of anti-Mormon campaigns.  Production of critical pamphlets, argumentative books, and sensationalistic videos goes considerably beyond merely "voicing disagreement."  People who simply "disagree" generally do not devote their lives to "ministries" against positions they do not share.  They rarely establish radio and television series to proclaim the fact that they simply do not hold the same position as somebody else.

(3)  Even granting the highly disputable implication that modern mainstream Christianity is "orthodox," it is clearly not the case that "LDS missionaries [can] be construed as anti orthodox christianity."  For they are clearly far more concerned with preaching the restored Gospel of Jesus Christ than with "contend[ing] against christian orthodoxy [sic]."  I know of no instance where LDS missionaries have sought to thwart Protestant Fundamentalist building plans, for instance.  They do not typically picket new evangelical chapels.  The Church of Jesus Christ does not publish pamphlets with titles like "Forty Years a Baptist Slave," or run radio programs devoted to testimonials of escape from the Foursquare Gospel cult.  There are no Latter-day Saints that I am aware of, missionaries or not, who make their living from professionally assaulting the beliefs, practices, or history of other faiths.  The emphasis of LDS missionaries, unlike that of anti-Mormons (or anti-Catholics or anti-Semites) is positive, affirmative, rather than negative.