Below is a concise or simplified version of what I've been saying endlessly.
To provide an illustration that conveys my point starkly: If eight people die
in a mass-shooting by some young men (which has happened frequently
in the United States during the past few years, people go berserk, and usually
attribute this occurrence to a mental disorder from which the young man suffers.

Yet when wars have occurred--that are monumentally destructive--making mass-shootings
trivial---these monumentally destructive events are accepted or received as if they are "normal."

Why is this? Any explanation? 

RAK

"HISTORY" as the NORMIZATION OF THE FANTASTIC
Richard Koenigsberg
Politics is that domain of human existence that generates massive forms of destruction and self-destruction. “History” is that discipline that represents profound forms of destruction and self-destruction as normal or normative. 

First World War Casualties
The figures below are from Chris Trueman's HistoryLearningSite.co.uk

Country Men mobilised Killed Wounded POW’s + missing Total casualties casualties in % of men mobilised
Russia 12 mil 1.7 mil 4.9 mil 2.5 mil 9.15 mil 76.3
France 8.4 mil 1.3 mil 4.2 mil 537,000 6.1 mil 73.3
GB + Empire 8.9 mil 908,000 2 mil 191,000 3.1 mil 35.8
Italy 5.5 mil 650,000 947,000 600,000 2.1 mil 39
USA 4.3 mil 126,000 234,000 4,500 350,000 8
Japan 800,000 300 900 3 1210 0.2
Romania 750,000 335,000 120,000 80,000 535,000 71
Serbia 700,000 45,000 133,000 153,000 331,000 47
Belgium 267,000 13,800 45,000 34,500 93,000 35
Greece 230,000 5000 21,000 1000 27,000 12
Portugal 100,000 7222 13,700 12,000 33,000 33
Total Allies 42 mil 5 mil 13 mil 4 mil 22 mil 52%
             
Germany 11 mil 1.7 mil 4.2 mil 1.1 mil 7.1 mil 65
Austria 7.8 mil 1.2 mil 3.6 mil 2.2 mil 7 mil 90
Turkey 2.8 mil 325,000 400,000 250,000 975,000 34
Bulgaria 1.2 mil 87,000 152,000 27,000 266,000 22
Total Central Powers 22.8 mil 3.3 mil 8.3 mil 3.6 mil 15 mil 67
             
Grand Total 65 mil 8.5 mil 21 mil 7.7 mil 37 mil 57%