He could not admit that some dozens of men, among them his brother, had the right, on the ground of what they were told by some hundreds of glib volunteers swarming to the capital, to say that they and the newspapers were expressing the will and feeling of the people, and a feeling which was expressed in vengeance and murder.
There are no more uses of "glib" in the book.
Show samples from other sources
Jean Louise was about to make the worst mistake of her life, and she glibly quoted those people at her, she mocked her.
Harper Lee -- Go Set a Watchman
"He’s glib, even as he murders his wife and child."