One character created by 
One character created by this author has a heart attack while playing in a cimbalom band after organizing the poorly attended Ride of the Kings. A character in another of this author's novels abides by the "rule of threes" for committing infidelity and is given the epitaph "He wanted the Kingdom of God on Earth" after dying in a car accident while working at a dairy collective. Ludvik Jahn writes "Optimism is the opium of the people!" on a postcard, resulting in his expulsion from the Communist Party in this author's The Joke. For 10 points, name this Czech author who wrote about the photographer Tereza's relationship with the Tomas in The Unbearable Lightness of Being.
One character created by this author has a heart attack while playing in a cimbalom band after organizing the poorly attended Ride of the Kings.
Milan Kundera