What is or isn't acceptable at the time is largely a matter of fashion and opinions. As an example, have a look at the ALA's compiled list of banned books (some

What is or isn't acceptable at the time is largely a matter of fashion and opinions. As an example, have a look at the ALA's compiled list of banned books (some of which are banned for ridiculous reasons): http://www.ala.org/advocacy/sites/ala.org.advocacy/files/content/FieldReport_Download%20%282%29.pdf http://www.ala.org/advocacy/sites/ala.org.advocacy/files/con...