So well put. Someone (I forget who) once said that "racism is the magic that makes your ignorance my problem." In the time that you took to think all of this through thoughtfully and carefully, your dinner party acquaintance has likely given this zero thought since it happened. That's time you could've spent with your children or partner, time you could have spent at hobbies or with friends -- instead you have to re-hash careless racist comments. Thank you again for sharing.