Did you read what happened? The DEA was about to move to make an arrest when a vehicle in front of the residence pulls away with it's lights off. The obvious interpretation of those events is the target of the raid is trying to flee. When you then intercept the car, the car rams 2 of your vehicles and then drives at an agent.
This wasn't a Bonny and Clyde ambush where the cops just started shooting. If the car had come to a stop, even after ramming the first car, there wouldn't have been a shooting.
What sort of officers or agents would jump out like they did, unless they had reason to believe something fishy was going on? AND THE AGENTS WERE RIGHT!!! There was something fishy going on. Drugs were involved.
This was NOT a simple, innocent "driving with your headlights off" offense, as you suggest. You're conveniently leaving out the drug component.
This would be an unmarked car right?
All too often, yes. I'm not a fan of unmarked cars.
You seem to have a problem understanding relevence and cause and effect.
Why refuse to consider the root cause? A 14 year old girl was illegally operating a car. Now, does this give the agents a reason to fire upon it? If the car tries to ram them, then yes. If not, then no.