Do you people REALLY think all muslims are bad ppl/murders?

i am a 13 year old muslim and recently a woman came up to me and pointed her finger at me and called me a murder? lol this doesnt really hurt me because i know better than to let people affect me but i am certainly curious as to c how many close minded people still believe that ALL muslims are bad people bcuz of bin laden or other extremists? its common sense to me - i didnt murder any1 and i was taught to respect other religions so why do u people still have this very childish mind? and if u do think all muslims are bad then why is islam one of the fastests growing religons in the world? :)