Good Samaritan laws are intended to protect people from liability when they voluntarily assist others in emergencies.
Here is an example of how Good Samaritan laws work. Let’s say you’re driving to work and you witness a car accident. One of the vehicles flips over the driver is stuck and yelling for help. You pull over and run to help, but in extracting him from the car, you end up breaking his leg and causes other injuries. Under traditional tort law, you could be liable for the driver’s injuries. The rationale was that you have no duty to render aid. But if you helped, you assumed a duty of helping safely and reasonably.
It is a well-established rule that ordinarily, in the absence of some special relationship, no legal duty rests on a member of the public to render services to an injured person. So you can immorally but legally let someone you could help suffer and die.