See the following comentary on the Emperor and War Responsibility by Vera Mackie where she notes:

This concentration on the Emperor may be puzzling to outside observers, but for the Japanese left, the imperial institution is a symbol of all of the systems of inequality in pre-war and post-war Japan. Most are focusing on the institution rather than the individual. Others focus on the Emperor's post-war role as symbol of the state. According to the post-warConstitution of Japan, sovereignty resides in the people rather than the imperial institution, and the Emperor has been reduced to a symbolic function.


One colleague explained to me that the Emperor now has no political power but is seen as a symbol of the state. ``For us,'' explained my colleague, ``that means that he is a symbol of discrimination.'' In the contemporary context, this involves criticism of the systems of hierarchy and inequality which persist in present-day Japanese society even after the enactment of the more liberal post-war constitution.

 


See also this excerpt from Murakami Haruki's recent (2002) novel, Sputnik Sweetheart


from: http://www.randomhouse.com/boldtype/0401/murakami/excerpt2.html

where a comical exchange between two characteres in a novel is captured about what the whole notion of the "symbol emperor" means. It seems to place the context of the emperor's role in a "theater-of-the-absurd" context.



"Right, I wanted you to tell me something. That's why I called," Sumire said. She lightly cleared her throat. "What I want to know is what's the difference between a sign and symbol?"


I felt a weird sensation, like something was silently parading through my head. "Could you repeat the question?"


She did. What's the difference between a sign and a symbol?


I sat up in bed, switched the receiver from my left hand to my right. "Let me get this right--you're calling me because you want to find out the difference between a sign and a symbol. On Sunday morning, just before dawn. Um..."
"At four-fifteen, to be precise, she said. "It was bothering me. What could be the difference between a sign and a symbol? Somebody asked me that a couple of weeks ago, and I can't get it out of my mind. I was getting undressed for bed, and I suddenly remembered. I can't sleep until I find out. Can you explain it? The difference between a sign and a symbol?"


"Let me think," I said and gazed up at the ceiling. Even when I was fully conscious, explaining things logically to Sumire was never easy. "The emperor is a symbol of Japan. Do you follow that?"


"Sort of," she replied.


"'Sort of' won't cut it. That's what it says in the Japanese constitution," I said, as calmly as possible. "No room for discussion or doubts. You've got to accept that, or we won't get anywhere."


"Gotcha. I'll accept that."


"Thank you. So--the emperor is a symbol of Japan. But this doesn't mean that the emperor and Japan are equivalent. Do you follow?"
"I don't get it."


"OK, how about this--the arrow points in one direction. The emperor is a symbol of Japan, but Japan is not the symbol of the emperor. You understand that, right?"


"I guess."


"Say, for instance, you write 'The emperor is a sign of Japan.' That makes the two equivalent. So when we say 'Japan,' it would also mean 'the emperor,' and when we speak of the emperor, it would also mean 'Japan.' In other words, the two are interchangeable. Same as saying, 'A equals b, so b equals a.' That's what a sign is."


"So you're saying you can switch the emperor and Japan? Can you do that?"


"That's not what I mean," I said, shaking my head vigorously on my end of the line. "I'm just trying to explain the best I can. I'm not planning to switch the emperor and Japan. It's just a way of explaining it."


"Hmm," Sumire said. "I think I get it. As an image. It's the difference between a one-way street and a two-way street."


"For our purposes, that's close enough."


"I'm always amazed how good you are at explaining things."


"That's my job,' I said. My words seemed somehow flat and stale. "You should try being an elementary-school teacher sometime. You'd never hnagine the kind of questions I get. 'Why isn't the world square?' 'Why do squids have ten legs and not eight?' I've learned to come up with an answer to just about everything.


"You must be a great teacher."

"I wonder," I said. I really did wonder.

*********************************************

 

Here is some language about the role of the emperor:

The constitution of Japan, which came into effect in 1947, is based on the principles of popular
sovereignty, respect for fundamental human rights, and the advocacy of peace. Japan's political
system is one of constitutional democracy. In accordance with the principle of "separation of
powers," the activities of the national government are formally divided into legislative,
judicial, and executive organs.


The Emperor is "the symbol of the State and unity of the people." The Emperor appoints the
Prime Minister and Chief Judge of the Supreme Court as designated by the Diets, and performs
"only such acts in matters of state" as provided for in the Constitution along with the advice
and approval of the Cabinet, such as promulgation of amendments of the constitution, laws,
cabinet orders and treaties, convocation of the Diets, dissolution of the House of
Representatives, and so forth.


The Constitution of Japan proclaims a system of representative democracy in which the Diet is
"the highest organ of state power." It is formally specified that the Diet, as the core of Japan's
system of governance, takes precedence over the government's executive branch. The
designation of the Prime Minister, who heads the executive branch, is done by resolution of the
Diet. Japan practices a system of parliamentary Cabinet by which the Prime Minister appoints
the majority of the Cabinet members from among members of the Diet. The Cabinet thus works
in solidarity with the Diet and is responsible to it. In this respect, the system is similar to that
of Great Britain, but different from that of the United States, where the three branches of
government are theoretically on a level of perfect equality.


The Diet is divided into two chambers: The lower chamber, or the House of Representatives, and the upper chamber, or the House of Councillors. The House of Representatives may introduce "no confidence motions" with respect to the Cabinet. The Cabinet, on the other hand, is able to dissolve the House of Representatives. It also has the authority to designate the Chief Judge and appoint the other judges of the Supreme Court. It is the Supreme Court that determines the constitutionality of any law of official act. The constitution authorizes the Diet to "set up an impeachment court from among the members of both Houses in order to try any judges against whom removal proceedings have been instituted."