Board Thread:Warhammer 40k General Discussion/@comment-6134883-20130417202949/@comment-3580035-20130422035115

http://warhammer40k.wikia.com/wiki/Ka%27jagga%27nath

There were killing the already tainted, so they needed to be killed eventually anyway.

(HA! Take that Matt Ward Haters! There was a good reason for it!)