Dissolution of the Soviet Union:

The CTAG (Latvian: Cilvēktiesību aizstāvības grupa, Human Rights Defense Group) Helsinki-86 was founded in July 1986 in the Latvian port town of Liepāja by three workers: Linards Grantiņš, Raimonds Bitenieks, and Mārtiņš Bariss. Its name refers to the human-rights statements of the Helsinki Accords. Helsinki-86 was the first openly anti-Communist organization in the U.S.S.R., and the first openly organized opposition to the Soviet regime, setting an example for other ethnic minorities' pro-independence movements.[citation needed]

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What group was the first to oppose the Soviet government publicly?
Helsinki-86