topics peopleWhat are some topics people avoid talking about (rape, depression, etc.)?

I need a list of topics and subjects most people try to avoid and/or pretend aren't going on in the world.

Please and thank you <3
Race
Religion
Income
Past mistakes
Abortions
Size of reproductive organs
topics people Gray hair
Weight
Facial hair on women
Early first sexual experience esp females
Body odors
Menstrual cycle
Past lovers
Grudges they hold/harbor against someone
Amount of gambling losses
Death, ESP suictopics peopleide
Details of sex life
Faults of dear family members
Drug use, past or present
Debt amount
Credit rating
Someone's mother's negative attributes
Want more?
religion, death and politics
sex.