For Papa, Japanese Americans should not fight on the US side, as that would be fighting to defend the country that imprisoned them, however, his son believes it is the duty of every American, including Japanese Americans, to fight on the US side.
We can arrive at this answer because:
Taking into account the suffering caused to Japanese and Japanese Americans during World War II, we can consider that Papa's position is correct in relation to how to fight the war.
This question is about the book "Farewell to Manzanar."
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