Man Attacking Man?
I always thought it was man has man....hmm
well....coming from a fan of Bands such as, The Number 12 Looks Like You, with songs about violent revenge, emotional satisfaction with having carnal relations with someone and then smirking when you see their kid, and dismembering someone who hurts you and using their bowels and limbs as weapons.......yeah....its just music.....
(Also Job For a Cowboy, Knights of the Abyss, Bless the Fall (Christian Metal) Beneath the Sky (Christian again) All That Remains and numerous others)
It goes back thousands of years, from ancient war cries and beats to past cavalry trumpeteers, to even now, with Tank Crews blasting music within their metal beheamoths.....Music is Emotion, Bottled up, subtle, or even just outright there, such as with Metal, and music does put people into a frenzy, but more violent?
Some of the most demented and sadistic murderers in Human History listened to the Master Composers of the European Continent, and suddenly, when kids mow through their school with a hellblaze of fire and lead, or when a couple of already unstable adults level a government building, suddenly its the music, games, people, culture.
Sum of what I typed....I dont beleive Music can make people more violent than they already naturally are.