During the years of the military regime of 1976–1983, Rabbi Meyer became a strong critic of the military government and its violations of human rights. He worked to save the lives of hundreds of people who were being persecuted by the regime. He visited political prisoners in jails. He worked with the Israeli government to free the renowned journalist, Jacobo Timerman, who had been persecuted, imprisoned and subjected to extended house arrest. Timerman dedicated his memoir of that time, "Prisoner Without A Name, Cell Without A Number" (1981), to the rabbi. Timerman wrote that Meyer had "brought solace to Jewish, Christian and atheist prisoners".