Sadness. It wells up. That's the main thing. People wreaking horror, death and pain on other people. Makes you wonder, "What's wrong with people?"
As a tolerant, liberal-minded person, I stand up for equality, liberty, fraternity. We do have to call out the hatred, the backward, the radical fringe. Some choices, some ways of living, some practices, some beliefs are just not acceptable.
Still you wrestle with your empathy and compassion for all that lives.
But what do we do in the face of hatred? The terror-makers? How do we call out those who stand against a free, democratic, liberal-minded, socially progressive world?
Enemies of freedom? Radical ideology of any kind. Fundamentalism. People with the idea that they have all the answers. That there is a better world than this one. Anyone who will kill another human for an idea or religious belief. These folks are seriously sick.
Do we harden our hearts? Do we strike out in retaliation? Do we hope for some fleeting, ephemeral, impossible "justice?"
This kind of attack is "personal." It's an attack on all of us. All who want to live. What do we do?