Jared Loughner - Did insane clown posses music play a part ?

Jared Loughner on his facebook and myspace discusses the music of the insane clown posse , and how he is a juggalo , insane clown posse is a band know for violent attacks and horrific crimes . including the attacks on tila tequila and method man. Could the violent lyrics of played a part in this horrific attack ??