Periodically, someone like a Pat Robertson or a Harold Camping will say or claim something that is so absurd and so ridiculous that it garners the attention of the national media and sends a collective shiver down the spines of the more sane persons who call themselves Christians. Because what has been carelessly spouted out by these persons are untruths and shine a negative light on Christianity, we are disgusted, outraged, and regretful that these persons decided to choose the Christian religion as the stage on which they showcase their tendencies toward lunacy.
And I believe that it is good and right to feel a certain sort of disgust and outrage when such persons say such things. Often when they do, they skew the truth, promote falsehoods, and lead others astray in the process. But as with all areas of life, I think that the motivations behind our disgust, outrage, etc. must be tested to show whether or not they are right in and of themselves and promote the truth. For though one reacts to the negative act of one, that reaction is not necessarily positive. In fact, it is probably more often the case that the negative acts of a person inspire and produce negative acts in another.