People want to look like very agressive, angry man, rough man! Why?.

Your observation is totally right.It's a passing phase.Once it was a chock let look.Well groomed hair and clean shave.Then came the rebel look.The trend was to question and frown at the establishment on every big and small issue. Now it's ill fitting look.They look as if they were wearing somebody's garbs.A street urchin's look as if they were starving since ages and "I know all look"(Reality is they do not know even the alphabets of their own mother tongue.Forget about other mother tongues).These things are bound to be there.Wearing a tough look is a false front.After all trends are cyclic in nature.