Performance artist Crackhead Barney caused chaos on the Piers Morgan Uncensored show on Wednesday night when she was invited on air to speak about confronting Alec Baldwin at a New York coffee shop.

Barney, clad in a bikini top that came askew and a plaid miniskirt, urged him, “Tarantino, say n*****!” an epithet he often uses in his scripts. He walked past her calmly as she called out ...