My number one job was not to taxi people from point A to point B but to maintain my own safety. Sounds like a very good reason not to ride in a Muzzi cab. Never know when they'll turn Jihadie on you.
Still, personal safety is one thing, an overdeveloped ability to "take offense" is a hog of a different color.
Around five years ago in Austin a white male "Christian" cab driver shot and killed two passengers who were giving him a hard time.