What is the central or main idea of Interview with Marielle Tsukamoto?

I am pretty sure that the main idea of the Interview with Marielle Tsukamoto was Japanese American internment. During the whole interview Marielle Tsukamoto tells about how she spent her time in an internment camp, shares her ideas about American citizens, her feelings of leaving lovely place, mentioned all her saddest memories and happy moments and praises her mother, I recommend you to read this article, it’s not a big one.