Yaakov, I know you wouldn't agree with me...but I strongly disagree with the use of the term "Schwartza". In fact, I'd even prefer the N word!!!! Using a Yiddish word for Blacks, may not only offend them, but, the worst of all, it makes the Jews seem racist and haters. I still have to explain Gentiles quite often that "Goy" means Nation, not cattle, that cattle in Yiddish is "Koi". No need to bring more misundersatndings. Just call them Blacks in English.
As for the Erytrean refugees, no need to mention their skin color. It's obvious that Israel must not give permanent assylum to ANY non-Jew, regardless of their race.
However, it's a humanitarian issue to save them if they are in danger, and send them to a bigger country which has enough place and can afford it.