Well, honestly, I usually don't mean to offend people, so if there are words that immediately trigger folks, I won't use them. Call me PC or whatever. Shortly after joining this forum, I mistyped a statement,,, saying "Jew foods" instead of "Jewish foods"... and the kickback was fierce especially being a white male from Alabama.
There are other derogatory terms for people of different ethnicities I avoid. Because once you say them, people do not hear beyond that into what you are trying to convey. That, and it's just not friendly. Or, right. And, I totally understand the reactions they trigger.
Beyond insulting names for different ethnicities, I am not familiar with what PC things are, nor why people would be against them. I am old, but I am willing to learn.