Lysistrata was banned in my town when I was a kid. Which of course caused dozens of us to read a 2,000 year old Aristophanes play that we otherwise wouldโve had no idea even existed (well, most of us). I was passing around copies of that thing like Soviet samizdat. And I do mean literal copies, made on a Xerox machine.
That ban worked out very well. It converted many people to readers who otherwise wouldnโt have been. And it made Aristophanes a โbestsellerโ in my town for a little while.