We cannot make photos of the past or the future. What happens now in front of our camera is our canvas. We can only learn from the past. The great tragedy would be to miss now. Be ready to see, camera at hand and remember to think through the shot.
Why fall into the trap of making some macabre image to shock your audience. We see enough of that without going out of the way. Trying to shock on purpose is going to tire very quickly.