I have not seen the documentary.  What we have is the BBC (Britain having its own traditions for hazing and "laddish behavior" , but not fraternities) coming over to do a documentary (?) or maybe the most shocking story they can for the attention it will garner.  Again, I have not seen this, but an independent fraternity means a group with essentially one chapter - generally that means no national association and no adult supervision of any kind.  Congratulations: The beeb has successfully found the least responsible fraternal group possible and, with Mr. Doyle's help, is stereotyping every college kid in a fraternity.  Nice smear job.  It is not that some 19-year-olds don't behave badly - they will and do - but in a place as populous as the US you are looking at 20 million university students so there will be no shortage of those stories and more often than not, it is not a student from a fraternity.