Originally Posted by Florian
There were probably as many peace-loving, pacifist Europeans and Americans in the second half of the 19th century and the first half of the 20th century as there are today (socialists for example). Did they outnumber the many chest-thumping Theodore Roosevelts and his war-mongering European counterparts? I don't know, but their numbers certainly didn't prevent two world wars.
I don't know if that's necessarily so. Socialists and Progressives like TR were pretty militant. I'm pretty sure that German Socialists, for instance, were generally supportive of the German war effort in WWI until the last year.