Have you ever read a book that was 'banned'?

Banned by whom and where? If you mean like "banned in Boston", I grew up in the 1950's and that was a sought after marketing banner like "NY Times Best Seller", so yes I read them. I don't recalled anything actually banned locally or regionally out here in the hinterlands of the West, unless you mean it didn't get the seal of approval from the Catholic Church's Legion of Decency by the priests and nuns. Those landed at the top of the Must Read list of course.