[tasogare]

That may have been true in the past, now it’s one more fiction. The real three powers are: the rich (which decide laws in the background), the politicians (gov+parliments that use the existing institutions to push laws decided by the rich) and the media (that create and drive public opinion and chose the politicians). The first two classes are not truly separated anymore, and one may pass from to another (best example is being France’s president Macron).