Why joker kill people??

Obsession, he will do anything in his power to find out who Batman is. He has tried, he has killed, wounded, maimed, and tried to destroy him to make him more like himself. ... Joker has been the arch-nemesis of Batman since 1939 and according to me these things make him a dangerous threat to bruce: He is UNPREDICTABLE.

I think u must ask the joker

the narrator is a first person, participant one, who describes in the simple past tense important and difficult events in his earlier life. he also provides temporal markers as the month (january) and the time (12: 30 pm). finally the account of his experience is very detailed, to the extent that a participant narrator would talk the same way about his experiences. a good example of such detail is the mention of the “bovril ration” which historically was a native american food adopted by european explorers in arctic and antarctic regions due to its high level of calories.

demonstrative is te word i think