Answer:
The main feature is that the Justices are not elected by the people.
Explanation:
The US Supreme Court Justices are not elected democratically by the people but they are instead nominated by the President and then after their nomination confirmed the the US Senate. Furthermore, they are serving indefinitely as long as they uphold the good behavior and can cast down laws passed as unconstitutional by the officially elected representatives.
This is the definition of the word obligation.
Nelson Mandela is famous for being a civil rights activist for South Africans. Black lives matter is a movement about rights for all Blacks. Both stand for black rights, though Nelson Mandela was standing up for a specific group of black.