This game's thematics are about war, demons, magic, killing, slaughtering, enslaving, pestilence etc and a silly card from a decade+ ago is a problem? Don't manufacture outrage please.
As I said, in line with an article that highlights MTG's efforts to incorporate diversity into game design, Invoke Prejudice is a card that needs to be removed from the game.
In the light of america's past treatment of minorities starting from natives and then blacks and even discrimination of specific groups of whites it is perhaps understandable people are wary of it but try to see the situation objectively without any historical bias or taking sides and simply the first principles of what is portrayed or stated.