George Orwell Quote

I have little direct evidence about the atrocities in the Spanish civil war. I know that some were committed by the Republicans, and far more (they are still continuing) by the Fascists. But what impressed me then, and has impressed me ever since, is that atrocities are believed in or disbelieved in solely on grounds of political predilection. Everyone believes in the atrocities of the enemy and disbelieves in those of his own side, without ever bothering to examine the evidence.

§ 2 - "Looking Back on the Spanish War" (1943)