No I wouldn't appreciate it, but I definitely understand the urge to go observe something you don't understand.
I don't plan on sitting in the middle of the room and snorting every time someone says something I find distasteful.
I'll leave that for my analysis later.
I've spoken to people who came to various groups of mine with the express attitude for disagreeing (and also to make fun of the naive little feminists/socialists/activits/what-have-you) and yeah it's not fun, but *shrug* it's not something I find personally offensive.