Spammers and people who act like they're so wonderful online all the time but they really aren't when you speak with them much.
Racism, sexism and all sort of small narrow minded people.
Why do you feel a need to tell them?
You are entitled to privacy. There is no need to upset everything this way. Say nothing about this in your family, go about your life making ethical and intelligent decisions, and make a contribution wherever you are, including at home.