I find it baffling that there are people, in the real world, who somehow think that for unexplained reasons they have the right to not be offended or be made to feel uncomfortable. Somehow they believe that their feelings are the responsibility of everyone else.
This is something that a white heterosexual middle-class male (such as myself) can probably never fully appreciate, but I try to sympathize.
Imagine what it is like to be black in a country where just a few generations back you carried at all times in mixed-race race situations the possibility of being assaulted without recourse or lynched, or in present times accused and convicted of a crime you didn't commit or shot on sight for being in the wrong place at the wrong time.
Imagine what it is like to be Jewish and have 85% of your relatives systematically wiped out in living memory.
Imagine what it is like to be a woman on a college campus where statistically 1 in 3 suffer sexual assault over the course of a 4 year education, almost always with the assailant getting off without charges.
Most times such people take offense it is not about feeling uncomfortable, but rather feeling unsafe. It is about fear that what starts with words will inevitably turn to, or enable, or justify actions.