hazing is just some gutless wonder lashing out at someone who he feels can't retaliate.
'getting even' for his own hazing by taking it out on someone who had nothing to do with it because he didn't have the guts to stand up to his own hazers.
organizations that have heavy hazing traditions set up a system where those at the top of the pecking order feel that the rules or even basic decency don't apply to them, those at the bottom are perpetual victims, and those in the middle kiss the bellybutton of those above them and vent their frustration on those below them.
if you let someone abuse you, you are a punk, even if they let you into their 'really cool club'.