Via the med 5 tags i came across "Race - Definitions of Key Race Relations Terms." It significantly discusses that race is predominantly a "social construct" (meaning a social phenomenon or category created and developed by society; a perception of an individual, group, or idea that is `constructed' through cultural or social practice).

This links in directly with my debate about stereotypes which are presented/not presented in 'Life isn't all ha ha hee hee' possibly resulting in the fact that no film/television series could ever present a race accurately because stereotypes are a mental model- ingrained in our way of thinking from a young age perpetuated by parents/educators/media itself e.t.c

http://racerelations.about.com/od/skillsbuildingresources/g/racedef.htm