The official Mormon Church really does not like it when people call members of the FLDS Mormons.
Well, that's just too bad! For, in reality, members of the FLDS have just as much right to be called Mormons as the members of the LDS church. After all, don't both churches consider Smith and Young as their founders?
And, if one considers the point a little, surely as Smith and Young both preached and practised polygamy, a practice the LDS church abandoned, yet is still fully embraced by the FLDS church, this would mean that, in essence, the FLDS is closer to the church of the founders (Smith and Young) than that of the modern LDS church?
This is the official LDS position on polygamy:-
24 April 2008 The Church of Jesus Christ of Latter-day Saints reiterates that it has no affiliation whatsoever with any polygamous groups, including the polygamous sect in Eldorado, Texas. The Church discontinued polygamy officially in 1890, but more than a century later some news and Internet reports fail to draw clear distinctions between the Church and practicing polygamous sects."
Well, that's not actually true, is it? There are credible reports of officially sanctioned polygamous marriages well into the 20th century. so if there are still references made to Mormon polygamy, perhaps this is because the Mormon church played fast and lose with polygamy for several decades after the official deceleration in 1890?
It is not possible for Mormons to distance themselves from Polygamy. Especially when their own sacred scriptures (D&C) still refer to Polygamy as an official doctrine of the Mormon Church.
Expunge polygamy from the D&C and you might have something, Mormons. But until then your protests cut no ice with ordinary people, who are not Mormons, who know full well the links between Mormonism and polygamy.