Specifically the giant is modeled on a character Kinski played in the Werner Herzog film 'Aguirre , the wrath of God'.
The film is about a ruthless Spanish conquistador called Aguirre and his obsessive quest for El Eldorado or the mythical Aztec city of gold.In the film South American natives are murdered for blasphemy because they do not recognise or bow to the bible.The film has heavy themes of obsession, religious corruption and religious motivated violence and hypocrisy.
In Jack the Giant Slayer however, the giants fighting the king have strong Irish accents, (which has to be intentional) the second in command giant also has a curious ethnic looking face, that could be black or Australian aboriginal.All these particular groups have suffered at the hands of an expansionist British Empire.
The toffs have bizarre uniforms with pretty obvious wings attached. Aristocracy and religion (remember the bowing which we will see later) all tried to link their own position to supernatural abilities, the idea your position was due to divine power.
http://en.wikipedia.org/wiki/Divine_right_of_kings (Worth sticking with, and reading the whole article).
This is easier when most of your society cannot read of course.
The King from the back with ermin trimmed angels wings.
In fact the giants themselves lose their anger in seconds when faced with a crown, bowing and scraping, the King and the toff knight exchange a cheeky grin when the giants bow.
The visual metaphors in the film are a bit clunking and the script is poor, but the subtext is pretty clear, the film is using the Jack and the Beanstalk story to show the ridiculous social phenomenon of royalty and crown worship.
This hidden subtext made the film more interesting.
I might do a post on using critical thinking at some stage, since its benefits far outweigh the effort it takes.
Thanks for taking the time to read, if you have any comments or questions please leave some, i always reply.