Complex sentence: The relationship between human rights and civil liberties is often seen as two sides of the same coin: a right is something you may demand of someone, while a liberty is freedom from interference by another in your presumed rights.
Split into simpler sentences: The relationship between human rights and civil liberties is often seen as two sides of the same coin. A right is something you may demand of someone, while a liberty is freedom from interference by another in your presumed rights.