Do people blow off stream by saying non-politically correct things? Absolutely. Working in an environment where you are dealing with life and death constantly, you develop a warped sense of humor and combined with lack of sleep and high stress degrades the frontal lobes, so comments get be made.
Some of the most insensitive comments about gays that I've heard have actually been made by gay and lesbian docs, last one I heard involved removing broken glass mixed with feces, ouch. If I would have came in on the end of that discussion it would have appeared horribly insensitive, but knowing/hearing the whole story made a huge difference. The location of a discussion also makes a difference. Some things/rants or not should never ever occur where patients are at!
That does NOT mean that I am at all!!! saying what was said was appropriate, justified, right, etc. but since I wasn't there to hear everything said and don't know you I reserve judgment in regards to if 'you' are in general overly sensitive.
You should definitely find a another physician, nurse, seasoned scribe, ED nurse manager (she or he should be the one to reign in the dr), or other prof there to discuss these things with who can provide guidance on how to address these challenges. That person might agree and help you with procedures for reporting or might tell you that you are being overly sensitive.
If you want to practice medicine you also definitely must develop a thick skin to work in the ER, because if it's not staff saying something offensive it definitely will be your patients, but absolutely hold yourself to a higher standard and know that many hospitals have a low tolerance for insensitive rants. You can also work to change a bad hospital culture, so don't blow negative things off as drs will be drs.