Information on domestic conflict for 111 countries were collected for the years 1919 - 1939 and 1946 - 1966. The variables record the occurrence of riots, demonstrations, and guerrilla war. Data exist for 42 years on 52 countries, and there are data for less than 42 years on 59 countries. Data may be obtained in either of two formats: nations as cases or nation/years as cases. In the first format a case would be Canada and variables would be riots-1919, riots-1920, riots-1921, etc. In the second format, Canada-1919 is a case, and riots appears as a variable with Canada-1919 being recorded as a second case.