Twitter erupts over Serena 'fans' who wore blackface to Aussie final

Was this ignorant fan at the Australian Open being hateful and mean-spirited toward Serena Williams, or was this a case of VERY unfortunate cultural ignorance gone horribly wrong?

Either way, when a pair of women attended Saturday's Aussie final (won by Angelique Kerber in a stunner) sporting black facepaint (one partially, the other in full blackface), it did not go over well on social media.

The act of a white person painting one's face to pose as black has an extremely bigoted and derogatory connotation in American history -- and is considered beyond taboo in modern times.

The gracious-in-defeat Williams has not commented on her official Twitter account. But Twitter is speaking STRONGLY against the women, inadvertent or not.