I don't care about what you do in the 'privacy' of your own home. [=I don't care what you do when you are at home by yourself or with your family]
She felt that the guard's request to search her was an 'invasion of (her) privacy'. [=she felt the search did not respect her privacy]
Celebrities have a right to 'privacy'.
(..) They start yelling. The other says, "You bitch!" And starts beating him on the head. I say, "Look, I don't care what you do in the privacy of your own home... "behind closed doors. "This is an American free country. We've got a pursuit of happiness thing. "You're consenting. You're adult. (..)1976 Taxi Driver