Gangster never do things in a normal way!!!

A gangster comes to the city and he beats every one he meets in the street,hmmm,it's really bad. However,it's his mission to do this,he has to obey the order and take money from the guys walking in the street. The more he collects,the faster the mission can be done.It's a sin city,said his boss,collecting money from people is kinda like taking sin away from them and it's a good deed.