Do you believe that it is possible to be a friend of somebody who vehemently disagrees with ones viewpoint on a matter?
Yes. I have good friends who disagree with my views, sometimes vehemently. I am speaking of everyday life, not of internet-forum friends.
How would you suggest a person handles such a disagreement on a venue such as this?
If both friends are able to keep the person separate from the belief, then it is possible to have discussions--even heated discussions--about the issue. Tempers may flare, but mature people will realize when that is happening and will excuse themselves and wait until they calm down to continue.
If either one of the friends is incapable of keeping the belief separate from the person, then the friendship is best maintained by not venturing into a discussion on that topic.
In recent years, as I've developed more and more experience at separating the person from the speech or behavior, it has become an automatic thing, a habit of mine; a way of thinking. It is disturbing and irritating to me when people assume they are seeing a personal attack simply because a person has presented a contrary view, or has exposed a flaw in another's view.
It is also disturbing and irritating to me to see blatantly insulting speech used in addressing others over differences of view or belief. Often, the only recourse in such a situation is to withdraw from the conversation. This may appear to some as defeat; undoubtedly the one casting the insults will pronounce it a victory. Situations like these are when it becomes necessary to fall back upon your own knowledge of what is true. You know that there has been unwarranted public ugliness, and that some observers have been fooled or swayed by the ugliness. Yet you know also that you have presented your position respectfully and well, and that readers/observers who are perceptive will know that you maintained your dignity and did not compromise your principles of respectful interaction. Now is the time to step away, regardless of the fact that your scruple-free opponent may gloat and taunt. Now is the time to behave as the one who is in the right, and to do so calmly, with conviction.
Tough assignment. The person who pulls it off is truly a mature and insightful person.
COMF