As someone who sat through four years of classes at The University of Chicago, most of which were liberal arts classes, they would most definitely allow you to

As someone who sat through four years of classes at The University of Chicago, most of which were liberal arts classes, they would most definitely allow you to argue about the justification of the Holocaust, whether we should return to slavery, and the merits or lack thereof of colonialism. If you can't discuss those things in a class but must merely passively listen as we all agree about why those things are clearly horrible, or even worse just not talk about them because they are so horrible, then you will fail to have confronted those ideas and will have learned nothing. The existence of an LGBTQ group and their safe spaces is not inconsistent with allowing students to explore the free expression of ideas in the classroom. As the university states, it is not going to tolerate harassment, and there can be a fuzzy line at the extremes. But they are definitely going to protect your right to respectfully state unpopular opinions. Ideas are not off limits; that is the whole point.