We humans are problem solvers. Look at our love of puzzles and games.
When something horrible like this happens, one of our first instincts is to try and figure out why it happened. We want to solve the puzzle.
We don’t have all the pieces of the puzzle. It’s impossible to solve the puzzle now. It may be impossible to ever solve this puzzle.
He is caught.
But still the clues are there. This is nothing short then demonic.
I think the shooter made very clear why it happened; what else is to know? Do you think blacks tie themselves into knots trying to figure out why a black guy murders white people? As terrifying as it may be, EVERYONE knows why this happened.