Butterfly on a Wheel
The film's title is an allusion to a line of Alexander Pope's poem "Epistle to Dr Arbuthnot": "Who breaks a butterfly upon a wheel ? " The line is usually interpreted as questioning why someone would put great effort into achieving something minor or unimportant , or who would punish a minor offender with a disproportional punishment . 
<triplet> Epistle to Dr Arbuthnot <subj> Alexander Pope <obj> author