Juan Gines de Sepúlveda and Bartolomé de las Casas in the Las Casas versus Sepulveda Debate

What are the significant details and perspectives presented by Juan Gines de Sepúlveda and Bartolomé de las Casas in the Las Casas versus Sepulveda Debate?
What aspects of Sepulveda’s point of view are distinctive and peculiar given his background, status, and subject position?
What aspects of Las Casas’ perspective are peculiar given his background, status, and subjectivity?
How do both of their perspectives suggest the social construction of race and culture regarding the Native peoples?
Can you describe how the "logic" or "rationale" behind their thinking still functions today with regards to how people perceive different peoples and cultures? Feel free to include discussion of any examples of how today's media (mis)handles politicized debate concerning the plight of other peoples or marginalized ethnic groups (e.g. CNN, FOXNEWS, MSNBC, online news sites, Facebook "news" content, etc.).