Of course I've received a lot of hate mail for including (with disclaimers) the 1861 text The Bible View of Slavery on my website, even though the article is linked to two contemporary, anti-slavery essays.
Mutual affection and confidence???? It's one thing to teach both side but another to excuse.
"I don't see the problem with teaching both sides of an historical dispute"
OK,then would it be all right to teach the Nazi view of the Holocaust in the interest of fair and balanced treatment of an historical issue?