I would say a dictatorship since there's only one person that the decision needs to go through.
This is an example of voluntary manslaughter.
Some American states call this crime a third-degree murder, although generally it is known as voluntary manslaughter. It happens when a person didn't plan on murdering anyone, but happened so in a fit of anger, for example. An example of such a crime would be if a husband came home and saw his wife cheating on him with another man, and he kills one or both of them in the heat of passion.
It was first celebrated in Canada, in 1882. It was brought to the US by the travelers from Canada and it became a national holiday in Canada in 1894.
Wearing the dress has become a(n) operant response