Why was Victor Hugo's "Les misérables" on the Index until 1959?

Wondering why it was on there. I’ve been wanting to read it for awhile now due to its apparent literary brilliance. (I’m sure it can’t be that bad given that my one friend’s devout Catholic homeschooler mom pushed it when I mentioned my wanting to read it. :D)

Obviously Hugo and the Church did not get along particularly well, and if you read of Hugo’s religious philosophy you get one of the most ridiculous piles of nonsense ever spewed forth from a human mind, but I’m wondering about the issues with this book.

Not sure, but the book is fantastic. One of my favorites!

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