Joshua Wong is a young Chinese human rights activist, recently sentenced to 13 and a half months in prison on the Orwellian charge of "incitement to knowingly take part in an unauthorized assembly" - meaning, in Chinese Newspeak, urging others to protest peacefully the tyranny now throttling Hong Kong. In his first letter from prison, the uncowed Mr. Wong wrote, "Cages cannot lock up souls." Indeed, they cannot. But the failure to defend the caged by standing in solidarity with them can do the gravest damage to evangelization.