levar jones was shot and wounded by police officer in columbia , south carolina , when he was stopped and told to produce a license .
he reached for his wallet and state trooper sean groubert opened fire , hitting him in the stomach .
jones writhed in agony on the ground and said : ` why was i shot ? ' as the officer accused him of a seatbelt violation .
jones tells daily mail online walter scott 's death should force rethink of police procedures with new non-lethal methods favored .
cop was sacked and charged with felony assault and faces maximum 20 year sentence if guilty .