I found the source @EasternStandard it was the Independent:
Iran tells young people to make human chains around power plants ahead of Trump’s deadline
Iran called on “all young people, athletes, artists, students and university students and their professors” to form human chains around power plants ahead of the threatened strikes.
Alireza Rahimi, identified by Iranian state television as the secretary of the Supreme Council of Youth and Adolescents, issued a video call, saying: “Power plants that are our national assets and capital, regardless of any taste or political viewpoint, belong to the future of Iran and to the Iranian youth.”
Iran has previously used human chains around its nuclear sites during periods of heightened tensions with Western nations.
Later, a Revolutionary Guard general urged parents to send their children to man checkpoints, which have been repeatedly targeted in airstrikes.
https://www.independent.co.uk/news/world/middle-east/iran-trump-strikes-power-plants-b2952793.html