The Greek transliteration for peacemaker is eirenopoios; it means to be peaceable. Ironically enough this is not how the Mormon acts towards anyone who challenges their belief system. You will encounter a myriad of angry outbursts towards the cause of Christianity. In the following example you will see how they accuse others for the contention they see.
D&C 10:63; “And this I do that I may establish my gospel, that there may not be so much contention; yea, Satan doth stir up the hearts of the people to contention concerning the points of my doctrine; and in these things they do err, for they do wrest the scriptures and do not understand them.”