When big data is used for police profiling and surveillance, it puts human rights on the line.
Being the victim of trauma can trigger the onset of PTSD. But so can being violent against others – which means young people in gangs risk deep psychological scars.
Trump's plans to crack down on immigration could create the same conditions that led to MS-13's birth and expansion.
They're a global phenomenon – but gangs are so varied that they barely merit the same name.