RaceRace is a classification that groups humans together based o...raceRace is a classification that groups humans together based o... RaceRace is a classification that groups humans together based o... is a classification that groups humans together based on physical traits such as skin color, hair texture, etc. Current scientific data suggest that there are more physical differences within so-called races than between them. is a classification that groups humans together based on physical traits such as skin color, hair texture, etc. Current scientific data suggest that there are more physical differences within so-called races than between them.