It’s been a year since Nigerian forces opened fire on peaceful protests at the Lekki toll gate in Lagos. At the time, a CNN investigation into what happened sent shock waves around the world. We found that the Nigerian army had fired live rounds into the crowd, killing and wounding several people. Witnesses also told CNN the authorities blocked ambulances from reaching the scene. Twelve months on, and a judicial hearing is finally expected to share its findings. Stephanie Busari reports.