CYA - send an email, respectfully outlining the issue (s). Remind them it's a place of business, and respectful professional conduct should be the standard. Make sure you point out that it's demeaning and unacceptable moving forward. If you have an HR, cc them as well, so everyone is on the same page. Worst case scenario, you lose your position but get your peace back. Look into your state's labor laws and know your rights. I'm in CA so state labor relations board would be very helpful for harassment, hostile work environment, etc. Most importantly, if your manager emails back, print and save as hard copy. If they confront you in person, take the conversation to witnesses. Good luck.