 Complete the following phrase:  The Helsinki Group, which was founded in Lithuania after the international conference in Helsinki Finland, where the post-WWII borders were acknowledged, announced a declaration for Lithuanias independence on foreign radio station. The Helsinki Group informed the Western world about the situation in the Soviet Lithuania and violations of human rights. With the beginning of the increased openness and transparency in government institutions and activities glasnost in the Soviet Union, on 3 June 1988, the Sąjūdis was established in Lithuania. Very soon it began to seek countrys independence. Vytautas Landsbergis became movements leader. The supporters of Sąjūdis joined movements groups all over Lithuania. On 23 August 1988 a big rally took place at the Vingis Park in Vilnius. It was attended by approx. 250,000 people. A year later, on 23 August 1989 commemorating the 50th anniversary of the 