When the crew lies about the events.
My bet is that the crew got on their too-common authority kick, had a grumpy passenger (who happened to be blind) talk back (because of the hour-long delay on the tarmac), and they removed him because they were still in the throes of their opportunity to exert their authority (power corrupts)... and the rest of the passengers acted out, being tired of moronic stewards abusing their position.
Americans are getting very, very, very tired of authoritarians.
Americans should be tired of leftist who always assume that a business is intentionally “mean” when they are merely following the diktats of an overeaching government. Sheesh, this story is precisely like Obama blaming insurance companies for his mandate. Freepers of all people, should more wise about stories like this,.