Have you defended any dictatorships? If yes, which ones?

[President Punxsutawney Phil]

There's no real, objective way to use "authoritarian" on a wide scale. To the extent it is defined, it tends to reflect cultural shibboleths and reveal one's own background more than anything else.
But I voted yes anyway. Some would say the government I've defended before in some circumstances, the United States government, is an authoritarian regime controlled by corporate interests, operating a surveillance regime far in excess even of what the KGB or MI6 could hope for at their height. That suffices for a yes vote even if I think the term is mostly useless.