just read this on another thread about shouty teachers and bringing bullies into line
a poster said you have to shout to get through to some kids, and you have to shout loudly if the individual is a 'hardened inner city kid' 
ive heard it before
we are inner-city
kids are kids
you're as likely to find a hideous bully in the country or the leafy suburbs as you are inner-city
and LOUD does not equal naughty...