In February, I found myself in the lounge of a sports arena in Cardiff, Wales. People walked around me as I sat with my laptop, tapping away. I was mixing scenes of police chasing a man who supposedly set off an explosive device at a protest in Rio de Janeiro. But all was not as it seemed - as became apparent in the many angles of the events shot by fighters for truth whose best weapons are phone cameras and laptops like mine. That's just one of the stories in the compelling documentary Black Code, based on the book by Professor Ron Deibert of Citizen Lab at the University of Toronto, investigating issues of technology that can help limit human rights... but can also help them flourish. Look for it on SuperChannel in Canada starting in the summer.