Dred Scott would remain a slave and, as a slave, was not a U.S. citizen and was considered property. The Chief Justice of this case, John Marshall, said that Scott shouldn't have even brought his case to court because he is a slave.
I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
