- Ahmed H., 40, jailed for 10 years over a riot at a border crossing in Hungary in September 2015
- Video footage appears to show Ahmed H., originally from Syria, trying to make peace between crowd and guards
- But authorities say he threw rocks at the police, and he was this week convicted of an "act of terror"
London (CNN)Thousands of refugees and migrants, most fleeing violence in the Middle East, mass at the sealed-off border, chanting "Open! Open!" They are desperate to cross into Hungary, but a razor-wire fence, temporary blockade and a line of riot police stand in their way.