"its cross of righteousness: J'accuse."
The term J’accuse meaning literally, I accuse, has come to be widely associated with a letter written to the French government by Emile Zola and published in the French newspaper, L'Aurore in 1898. It was composed in response to the imprisonment of a Jewish army officer, Alfred Dreyfus, on Devil’s Island by the French military and legal establishment.
Although Zola was convicted of libel, he sought refuge from imprisonment in England. he eventually turned to France in 1899, the same yrar as dreyfus' retrial and subsequent pardon. 
After Zola's letter, the term J'accuse came into popular use as an expression to denounce someone guilty of a perceived injustice.