What does Nehemiah 5:8 mean?

I said, 'We’ve done everything we could to buy back our fellow Jews who were sold to foreigners, but now you’re selling your own people, and they end up back in slavery to us!' They had nothing to say—they just stood there, embarrassed. Nehemiah 5:8 - Modern Text Bible

(Nehemiah points out the hypocrisy: they rescued people from foreign slavery, but now some are enslaving their own community for profit.)