if he knows the meaning to bad and good than he definetely knows that his father is gangster or bad and he knows nothing about RK only he shout on him on telephone that's why he is bad
what ever his father was doing with him prey for other gangster
talking so strictly , he sleep alone, live alone no friends no family no school etc its all nothing for him
its not the matter to bash a kind
its matter of story which cvs showing us
that much heavy dialogue from this kid who don't know what is good or bad as you said
and why his father never clear the meaning of good and bad to him
if some on kill so many ppl or other criminals
but talk lovely or politely with madhu and her mother that ALL SIN OR GUNAH MAUF TO HIM WOW