This is the baffling moment a school cleaner is fatally injured when she slips off a ladder as she is cleaning a school and smashes into the playground below. https://filedn.eu/lhVNGNsizwl5t7THnzzJ2c8/New%20public/CEN-CleanLadder-01.mp4 Victim Sandra de Sousa Marinho, 41, had apparently been clearing gutters at the Class 10 School. In Ceilandia, in the…