The short answer is, Christians who possess a true understanding of Christ's teachings do not have evil intentions against anyone. Those who do not have a true understanding can fall into a number of categories: mislead, mistaken, ignorant, or as a previous person suggested, just Human (i.e., fallible and imperfect). \n\nThere are, however, those who do have legitimately evil intentions that they seek to carry out in the name of "Christianity". These individuals/groups have no caring for anyone but themselves and their close circle of like-minded "friends". More often than not, your examples (and other things like them) are due to reasons listed in the previous paragraph, but the truly evil intentions do exist. Jesus taught that we will know them "by their fruits"...that is, know them by their actions, NOT their words. If their actions suggest something other than what they claim to be, then they either have an incomplete or incorrect understanding of the true teachings of Christ, or they have other more insidious motives. You will have to decide for yourself who falls into which category.