Kicking off this week, the challenge, which will award $10,000 in prizes overall, invites students to positively contribute to their communities, and submit short videos explaining the inspiration behind their actions and extraordinary impact. The IWitness Video Challenge is open to all secondary school students in the United States and Canada (except for Quebec) who attend public, private or home schools. Participants can access resources and submit entries at iwitness.usc.edu.