No, he's referring to jury nullification. Like almost any tool, it can be misused for unethical purposes, as it sometimes was against my fellow Americans of African descent in hundred years leading up to the civil rights movement. However, at an earlier point in history, jury nullification was used against the slave trade when many juries refused to convict anti-slavery activities of breaking the fugitive slave law.

Presumably, using jury nullification to protect core values embedded in our constitution would not count as a misuse.