When you want to stay clean, you have others do the dirty work.
The ones that volunteer for the dirty work are usually regarded as equally disposable as those getting "cleaned."
Those calling for volunteers view this as a transitional period, from which they will emerge, unscathed. Unscathed, why? Madness is not to be ruled out. Nor hubris.
One is promoting it directly: by inciting the citizenry to murder.
The other is promoting it indirectly: by shamelessly engaging in it himself.
Yes, the former is worse. But they're both evil, and both are social poison.