CSF 1 Use a car as a shield and get close to them

You grab a near by car and hold it in front of you as you make your way slowly towards the panicking criminals. When they get right up to them they decided to flee, meanwhile some cops are pinned down behind you by two men who will soon end them get the drop on them.

What do you do?

 * Chase the fleeing criminals
 * Help the pinned cops