Ronald Greene, 49, died in May 2019 after a car chase with Louisiana troopers
Greene s family was initially told he died in a car crash near Monroe
Bodycam footage his mother was shown last year shows a violent arrest
Greene was tasered in his car, dragged out, tasered again and handcuffed
He tells the officers: Brother, I m scared as they scream obscenities at him
At one point Greene, handcuffed, is dragged by his feet, face down on ground
He was left on the ground for nine minutes as they cleaned his blood off them
A supervisor arrives and thanks the troopers for their good work