Just recently actually...several times in fact. Myself among others.
Not that the..."opposing force" I guess you can say actually sees it that way mind you. Somehow asking questions that address gaps in logic or criticize the overall "fact" that is being asserted and asking for proof is somehow equivalent to a full frontal assault on their very characters.
Doesnt make any damn sense no matter how you look at it really. Its rather surprising that such people consider themselves mature in discussions (as they talk sh*t) yet dont seem to have ever had to talk to people with differing opinions where they didnt get offended somehow.