Why does Facebook think I want to be a screw...?

And what kind of advert is this?  Do they really think that refereeing a punch up inside a prison is something to aspire to?  Does anyone look at these dystopian images and think "Yes, that's for me.  Standing in a gloomy room with no windows trying to split up a fight.  That's what I'm looking for out of life".  These people are not like me.  I do not want any job even tangentially related to physical violence.  It sounds about as glamorous as a visit to the dentist.  But I'm sure this will appeal to their target demographic of people who fancy a bit of a barney ...which is even more scary.