If you are say, African-American or Hispanic, advertisers could choose to have you not see their ads. Could paid content be next?

Facebook reportedly has technology allowing advertisers to target online users by race — while excluding certain groups.
Imagine if, during the Jim Crow era, a newspaper offered advertisers the option of placing ads only in copies that went to white readers. That’s basically what Facebook is doing nowadays. The ubiquitous social network not only allows advertisers to target users by their interests or background, it also gives advertisers the ability to exclude specific…