Under King Zedekiah, the people freed their Hebrew slaves. What did they do afterward?

Answer: Took them back as slaves

After making a covenant to free their Hebrew slaves, the people changed their minds, took them back, and forced them to become slaves again.

“that each man should free his Hebrew slaves, both male and female, and no one should hold his fellow Jew in bondage.”— Jeremiah 34:9 (BSB)