Japanese Hoars

I think it's sad. They don't care about their own nationality for a country that'll never accept them. Japan is infamous for how much they disdain foreigners. Even now, Japanese people with Korean ancestry are treated like second hand citizens, can't vote, can't run for office, even though they were born in Japan, only speak Japanese and so on. The Supreme Court upheld that law in 2005. What makes these people think they'll be more accepting of people who are blatantly foreign?