One of the many to be arrested in the Iranian government's crackdown is human rights lawyer Mohammad Mostafaei.
Mostafaei has campaigned against the execution in Iran of people who committed crimes when they were under the age of 18.
In May, RFE/RL's Radio Farda was provided with a video that documented the suffering of Iran’s child offenders, co-produced by Mostafaei.
The video, which you can watch above, is compelling viewing.
-- Luke Allnutt