in what way the manga is interpreted on the basis of politics?
The persecution by Marleyans is similar to the Jewish persecution by Nazis in Germany. This give rise to the theories of antisemitism and fascism.
Attack on Titan
antisemitism and fascism 
what happens at the end of attack on titan manga The Corps theorize that Titans were originally humans, and may regain their human form by consuming an individual with Titan power, acquiring those abilities for themselves. what are the critical responses the manga got? Many have analyzed "Attack on Titan" as representing "the hopelessness felt by young people in today's society"
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Attack on Titan [SEP] Political interpretations
This has led to accusations and theories of antisemitism and fascism apology against the series and its author, Isayama. This includes claims that Isayama is promoting nationalism and the theory of Jewish global domination. However, this has been argued against by many fans of the series, with claims that while the Eldians mirror Jewish people, they are intended for readers to sympathize with rather than to be portrayed as villains.