Advertisers on Facebook are being given the opportunity to exclude people of certain ethnicities from seeing their ads. This is the accusation made in a new report by ProPublica, and it's a feature that -- if true -- would be both racist and illegal. Just as for Google, advertising is big business for Facebook, and the social networking giant is keen to give advertisers all of the tools they need to ensure the maximum return on their investments. But the revelation that the audience for ads can be targeted by excluding those with a particular 'ethnic affinity' is more than… [Continue Reading]