You basic premise is faulty. What your professor said is indeed correct and is recorded in history books as well as religious history books.
You can be offended all you wish that does not change facts. In the US the roman ‘mass’ is not typically celebrated in Latin. Your lack of understanding of what Vatican II was all about or the changes in the church in the last forty years. Sorry to burst your bubble. Feelings are not facts. Being offended is not about dealing with history
Then please share with us your understanding of Vatican II and the Novus Ordo Nifster.
Psst! For the low price of just $59, you can buy this book:
... in which all of the secrets of the dark Papist rituals are spelled out in clear English right next to the highly-mysterious Latin! Don't tell anyone I told you!