US Democrats face off in first presidential debate

US Democrats face off in first presidential debate; USA, Florida, Miami: Domocrat presidential candidates speaking to press in 'spin room' following first tv Democratic Debate, including Julian Castro (Democrat candidate), Senator Cory Booker (Democrat candidate). USA: Florida: Miami: 'Democratic Debate' spin room: INT Various of Democrat presidential candidates into 'spin room' and surrounded by reporters immediately following first tv debate Unidentified Democrat candidate speaking to press SOT - [re Donald Trump] he's the reason that you have this chaos on the border Julian Castro (Democrat candidate) speaking to reporter SOT - [re drowning of El Salvadorian migrant and his young daughter in Rio Grande] they drowned because of the policies of the policies of this administration Senator Cory Booker (Democrat candidate) speaking to reporters SOT - [re photograph of drowned El Salvadorian migrant and his young daughter in Rio Grande] we are a nation of profound empathy/ these are policies being pushed by a President who seems to think it's OK to separate families, to deny people their human rights