Ilse Koch
Mass media around the world covered Ilse Koch's trial.  People who had survived the Buchenwald and Majdanek camps talked about how she enjoyed abusing prisoners at the camps.  For example, they said she used to like beating prisoners with her riding crop, and that she used to make prisoners do exhausting exercise because she liked watching them suffer.   In Germany after the war, Koch was seen as "the concentration camp murderess."  She was accused of having prisoners with interesting tattoos murdered so she could take their skin as souvenirs.