Would it be too far a stretch to post the photo, then ask students to speculate about this building? As to its history and or prior use? Current use?
No matter how "neutral" the course material is, there may likely be some strong "feelings" the are present.
In your course you might want to include some information/ video on the fact it is "okay" to feel strong emotions when learning this material. Individuals may react / respond differently and honestly not know why they are struggling with these feelings. They may need some guidance in this area. It is possible for some it is still very painful.
Best of success in your course!