Race

Why do liberals call it a social construct?
When they say 'race has no biological basis in reality' do they mean 'race as the social construct implies it is has no biological basis in reality' or just plain denial?

>>18
As long as there are retarded campaigns like "There is no gene for race" http://www.humanracemachine.com/ http://img170.imageshack.us/img170/615/nogeneforracejq8.jpg (which is true, but there are GENES for race, their correlation structure inferring race) going about problems will ensue.