What as per your would be the motive

Mental illness Kirk provided a forum and allowed anyong who wanted a microphone to express their views and defend them all he did was ask questions.

Political in the surface, but underneath usually these folks are wanting attention or have misplaced emotions.

Do you really need motives these days??? Most of the time, killers get more infamy than the people who are killed.

Evil. Pure and simple evil.

you can't explain crazy