teaching - Is it appropriate for my professor to include gender offensive material that is unrelated to the class subject matter in the course notes?

My accounting professor created a large binder full of notes for us to use instead of an actual textbook. He created it, and since he's the head of the accounting department at my university, he has implemented it into all of the accounting curricula. In this binder, there are news articles and random cartoons which are almost entirely unrelated to accounting. For example, there is a Calvin and Hobbes comic strip on almost every other page and the content of the strips are not in the least related to accounting.

An exam is coming up so I started studying from the beginning of the section and I happened across an unusual piece that was photocopied into the notes. This piece is the Italian telling of "Sleeping Beauty". No explanation or anything saying what it is; I was only able to figure out what it is because I was so offended by it (read further for an explanation of the offense) that I researched what it was, so I could maybe develop an understanding of why my professor would dare to include this in what he is teaching us.

If you are not familiar with the Italian (arguably the original) telling of this fairy tale, it is rather simple, and goes as follows: A young woman is drugged; she appears to be dead to her family so they leave her body in peace in a cabin that they seal up. One day a rich king comes across the cabin and breaks in; he sees the YOUNG woman and assumes she is asleep so he rapes her because she's so beautiful. This young woman eventually gives birth to twins and through a series of events they wake her from her drugged and practically dead state. Skipping some information I don't think is necessary, the young woman considers her rape and rapist blessings and is thankful for said horrific rape.

Now, my question is that I want to know if this is acceptable? I was disgusted when I read it (while studying for an exam, mind you). I consider myself a feminist and as a woman myself, I found the story offensive in the extreme. I also feel that this is helping to perpetuate the belief that women should be thankful for their rapists because it is a compliment. Can my university (a state university) legally, ethically, and morally publish this to their students in a faculty made textbook? I want to take action but I am not sure if this is even allowed and do not want to make a fool of myself.

Update (posted in comments):

I have spoken with the professor who created this book (it is more of a textbook than lecture notes) and he admitted he was in the wrong for including this. He stated that he likes to include things unrelated to accounting in his book just because. There was no explanation about the story, no relating back to accounting or econ or anything.