Oscar-winner Errol Morris blasts Donald Trump's 'mean' handling of migrant children

Errol Morris premiered his documentary 'Separated' at the Venice Film Festival, criticizing the Trump administration's policy of separating migrant children from their parents. The policy, part of a 'zero-tolerance' approach to illegal immigration, led to over 4,000 children being separated. The film is based on a book by journalist Jacob Soboroff.