It is my privacy, and just because a private building owner can legally violate that privacy doesn't mean that they should or must[1], or that the users of that

It is my privacy, and just because a private building owner can legally violate that privacy doesn't mean that they should or must[1], or that the users of that building shouldn't question the stated reasons that their privacy is being violated (particularly in the case of universities, which usually respect their community members' opinions more than a typical private organization). [1] For this reason, your assertion that secretly entering a private building is a crime is not universally true.