No matter who is

trampling on their roses, pissing on their parade,
metaphorically kicking the dog when he is down -you will
become the object of that pent-up aggression, because you
spilled their beer, cut them up in the car, looked at their
girlfriend or simply because you were there. That attack is
very often brutal, sometimes fatal. Being in Code Yellow
will allow you to detect and subsequently avoid these
philistines and these incidents in the primary stages, again if
you don't know the language you can't talk the lingo.
In the bar or the street you can often spot the gratuitous
attacker, he'll have a bad attitude -probably propping up the
bar or stalking the dance floor -his elbows pushed out from
his sides as though carrying buckets of water. He'll have the
customary curled upper lip and will probably be very rude to
anyone that moves within a few feet of him. If he's walking
down the street he will do so with an overconfident bounce..
If he's with others he'll probably be very loud, garrulous and
erratic in his movements. He may also be mean and moody
with a very aggressive gait.