Searching for activities in Belgrade

Hello everyone,

I am Stan and I am organizing a study trip to Belgrade for 40 psychology students. We want to do some activities in Belgrade related to the Yugoslavian war or the mental health care in Belgrade (because our research question is related to these topics). I am asking you to help me find these kind of activities, and then especially the ones not mentioned on trip advisor or something (so like the musea).

Thanks a lot!
Stan Lumens