Wow that's the worst motivation for a serial killer ever.
Destroying the last stored memories of the Kazon from Human memory.
Of course that would only be possible after detonating several large nuclear weapons across the globe to destroy all analogue and digital evidence of the Kazon.
Then there's the book burning of course.
but after you've inverted the magnetoshepre, made a bonfire of all the encyclopaedia and fanzines, then, only then you can hunt down the trekkies in the cursed wasteland and save the future of humanity from knowing what a Kazon
Who says that it's bad thing to be driven by faith towards a deeper calling?