Question

What is the crime of the ages

Answer 1

The "Crime of the Ages" is a political cartoon that depicts all the countries involved in WWI pointing fingers at one another. It is saying that everyone was responsible. 

Answer 2

The assassination of Archduke Franz Ferdinand that lead to the period known as WWI. 

sources http://www.answers.com/Q/What_is_the_crime_of_the_ages?s=1