The Cruelty Diagram consists of a circle split into 4 segments, each with a different colour.
The 4 segments represent cruelties to Minority Groups, Women, Children, and Animals.
The diagram has a time scale, with a scroll bar for an animation over time, just like a movie.
The frame of reference could be the evolution of cruelty over time for any geographical area.
An example of an exercise for students of History.