I have my controls set so that a family member can only see pictures. For a time, the person was unblocked and I hid specific things on my wall, but question me about stuff other people wrote.
A friend's son's posts don't show up on my wall. He sends stuff out to everyone on his FB list and lets just say we do not see eye to eye on many things. It's easier to do it this way than defriend him, because his mom likes having an extra set of eyes on what he posts to his wall.
He knows my political affiliation is different, yet at 14, isn't wise enough to realize that posting that stuff isn't going to change my mind and get me to switch parties.