thanatocracy

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Nominal governance by a dead person, through posthumous holding of an official position of authority, or by popular veneration and lasting influence of a personal ideology.
• noun The enactment of mass and organized killing as an official policy of a state.
• noun The enactment of policies held to lead, directly or indirectly, to death or an increased risk of death.
• noun A culture in which rituals relating to the dead play a unique or important role.
• noun figuratively Endemic stagnation or decay.