From nbc news World Headquarters in new york, this is nbc nightly news. Reporting tonight, lester holt. Good evening. Theres video showing the start of what would become a fatal encounter between a North Charleston, south carolina, policeman and the motorist he is accused of murdering. Police dash cam video shows a routine traffic stop. Its saturday morning. Walter scott pulled over for a broken taillight. Officer Michael Slager approaches the car. There is a brief conversation about whose car it is. Scott seems to say he is purchasing it. The officer returns to his car apparently to check on scotts drivers license. At one point, scott starts to exit the car, but complies when told to stay inside. Then watch whats about to happen. But its that other tape, the one seen around the world of slager minutes later shooting an unarmed and fleeing scott in the back thats turned this into a murder case. In a moment, well show you exclusively an emotional meeting between the young man that video