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On March 4, 1989, the Memorial Society, committed to honoring the victims of Stalinism and cleansing society of Soviet practices, was founded in Kiev. A public rally was held the next day. On March 12, A pre-election meeting organized in Lviv by the Ukrainian Helsinki Union and the Marian Society Myloserdia (Compassion) was violently dispersed, and nearly 300 people were detained. On March 26, elections were held to the union Congress of People's Deputies; by-elections were held on April 9, May 14, and May 21. Among the 225 Ukrainian deputies, most were conservatives, though a handful of progressives made the cut.

What ideology's victims were being honored by the Memorial Society?
Stalinism