Because it's easier to identify with an individual than with masses of victims?
I reserve the right to be outraged by my choice of the heinous events happening on a daily basis. This one really got to me, for some reason. Maybe it was that Khashoggi looked familiar, facial hair and all. Also the poor, jailed kids at the border. Talk about impotent rage.
The massive collateral damage done by greed and war and international politics is beyond most people's comprehension.