the actual barricades remained on the streets of riga for a long time; for example, those at the supreme council were removed only in the autumn of 1992. in march partially in response to january events and partially because of upcoming soviet referendum on preservation of federation, which latvia intended to boycott, a poll on independence was held with 3/4 of participants voting in favor of independence. latvia faced further attacks of pro-soviet forces later in 1991 - on 23 may, when omon launched attack on five latvian border posts and during the soviet coup attempt of 1991, when several strategic objectives guarded during the barricades were seized, with one civilian (driver raimonds salmiņš) killed by soviet forces. the attempted coup prompted the latvian government, which originally had intended gradual secession from the soviet union to declare full independence, which was recognized by the soviet union on 6 september. the soviet union was dissolved in december 1991.