Mikhail Gorbachev major campaign to limit alcohol consumption, which Gorbachev—who believed it would improve health and work efficiency—oversaw. His wife keenly supported the measure. As a result, crime rates fell and life expectancy grew slightly between 1986 and 1987. The reform had significant costs to the Soviet economy, resulting in losses of up to $100 billion between 1985 and 1990. Gorbachev later considered the campaign to have been an error. In April 1986 the Chernobyl disaster occurred; in the immediate aftermath, officials fed Gorbachev incorrect information to downplay the incident. As the scale of the disaster became apparent, 336,000 people were evacuated
Mikhail Gorbachev to the Soviet jurisprudential norm that a confession proved guilt, noting that confessions could have been forced. During his studies, an anti-semitic campaign spread through the Soviet Union, culminating in the Doctors' plot; Gorbachev publicly defended a Jewish student who was accused of disloyalty to the country by one of their fellows. At MSU, he became the Komsomol head of his entering class, and then Komsomol's deputy secretary for agitation and propaganda at the law school. One of his first Komsomol assignments in Moscow was to monitor the election polling in Krasnopresnenskaya district to ensure the government's desire for near