Original sentence: To many of their modern supporters, the Ustaše are considered merely victims of the Bleiburg massacre, and late president Franjo Tuđman even proposed to rebury them together with victims of the Jasenovac concentration camp, as a sign of national reconciliation
Edited sentence: To many of their modern supporters, the Ustaše are considered merely victims of the (non-existent) Bleiburg massacre, and late president Franjo Tuđman even proposed to rebury them together with victims of the Jasenovac concentration camp, as a sign of national reconciliation