what is in me is inside of all of them. that our choices matter, and that the implications of our beliefs matter, and understanding them matter. >> ladies and gentlemen, here's zack ibrahim. [ applause ] >> this is model united nations. thousands of high school students from all over the world have gathered here to learn how to become future leaders. and now zack has their full attention. >> i was 7 years old when my father went to prison, and there is not a day that goes by that i had wish he had chosen a peaceful path. instead, he exposed me from a very young age to the intolerance and radical nature of extremism. and yet i stand before you all today with this simple message. that mono matter the level of violence you've been exposed to, it doesn't have to define your character.