I believe it is the combination of
a) desensitisation due to being overloaded by media all these years of all sorts of atrocities.
b) the realisation that we can't really do anything to change it.
Yes I could join some rallies and what not to show my disgust at what is going on in the world, but if I truly believe it won't do anything, am I not only doing it for show?
I don't think that you should ignore the issue - but when I find out what I can do to actually help, im sure I'll act upon it.
"First they came for the Socialists, and I did not speak out—
Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out—
Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out—
Because I was not a Jew.
Then they came for me—
and there was no one left to speak for me."