Former Soviet dissident Vladimir Dremlyuga has died in the United States at the age of 75.
Dremlyuga, who was one of eight Soviet citizens who staged a demonstration on Moscow's Red Square in 1968 to oppose the Soviet-led invasion of Czechoslovakia, died on May 26, but news of his passing only became widely known when it was posted on social media on August 9.
Dremlyuga was sentenced to three years in a Soviet labor camp for his participation in the August 25, 1968, Red Square protest.
When that sentence was completed, he was given a second three-year term for anti-Soviet activities allegedly committed while he was in prison.
He was released from prison in 1974 and was allowed to leave the Soviet Union at the personal request of U.S. President Richard Nixon.
He settled in Jersey City, New Jersey, and became a successful businessman.