Complex sentence: Rights are defined as entitlements that belong to all human beings regardless of race, ethnicity, or socio-economic class; all humans, therefore, are rights holders, and it is someone's duty to provide these rights.
Split into simpler sentences: Rights are defined as entitlements that belong to all human beings regardless of race, ethnicity, or socio-economic class. All humans therefore are the rights holders, and it is someone's duty to provide these rights.