Could smartphones and cameras be our most powerful weapon for social  justice? Through her organization Witness, Yvette Alberdingk Thijm is  developing strategies and technologies to help activists use video to  protect and defend human rights. She shares stories of the growing power of distant witnesses -- and a call to use the powerful tools at our  disposal to capture incidents of injustice.

Source: Ted Talks
Yvette Alberdingk Thijm