[mythrwy]

There are acceptable degrees of neutrality though.

If a bookseller refused to sell 1619 because they deemed it false and harmful I'd consider doing business with the bookseller even though I don't care for the premise of the book. Or if they sent "Protocols of Elders of Zion" free of charge and unsolicited to schools I'd also not want to do business with them.

Booksellers, like the internet, should probably stick to being a dumb pipe within the confines of what is legal.