Merck & Co. Inc. Chief Executive Kenneth Frazier resigned from U.S. President Donald Trump's American Manufacturing Council on Monday, saying he was taking a stand against intolerance and extremism.

Frazier, who is African-American, is the only CEO so far to leave one of Trump's advisory councils because of his reaction to the violence in Virginia. Prominent Democrats and Republicans criticized Trump's response to the violence over the weekend.

A gathering of hundreds of white nationalists in Virginia took a deadly turn on Saturday when a car plowed into a group of counterprotesters and killed at least one person.