Tali, don't bother. The people you're trying to reason with (mainly ego and sooty) have no ability to reason, they are utterly convinced not only that they are in the right, but also morally superior to others who don't agree.
Horror, shock! With my friends and family I tell racist, homophobic, sexist jokes, and we all find them funny. We even tell rape jokes. Surprisingly none of us have turned out as any of those things, because you know? The INTENT does count, and the recognition that they are jokes and that they play on exaggerated stereotypes.
You are most welcome now to get aggrieved, shocked and offended on the behalf of every racial/gender/disabled minority you can think of. It is actually fun to watch. Unknowingly, you are really making caricatures of yourselves.
Do not worry, people like you and people like me will never mix, because I like to live my life without that massive chip on your shoulder you seem so proud of. I laugh at everything, because I choose to believe most people do not tell a joke to laugh at a real situation, but at the absurdity of the joke itself. I am a woman and I laugh at (and tell) sexist jokes. And I laugh at the image of you two fuming at the ears reading these comments and reaching the top levels of offence.
Professional offendees ARE funny. For others who listen to them occasionally, that is. For people having to share space with them, they suck all the joy out of life. And funnily enough, they usually are the racist, homophobic, sexist ones inside. because in their condescendent way, they appoint themselves as the "saviours" of those "poor minorities" who are not even intelligent enough to decide what they laugh at, or get offended about.