Alleys of Heroes. Defenders killed in 2014–2026 are buried at the Central cemetery and above all at Novo-Baranivske, where hundreds of blue-and-yellow flags fly. By January 2026 its alley was almost full and the city planned 300 more places. A new 19-hectare cemetery near Novoselytsia has been blocked by residents who fear their wells will be polluted, leaving the plot on Berezovyi Hai Street as the community's only open cemetery.
Remembering those killed in this war. In 2015 a monument to the soldiers of the 9th battery of the 27th rocket artillery regiment was unveiled on Kondratieva Street; it bears 23 names, 17 of them killed near Peremoha in Luhansk Oblast by shelling from Russian territory. On 4 November 2023 the concrete installation "To the Defenders of Sumy Oblast" appeared in the square opposite the art school, and in May 2025 an Alley of Memory with portrait cubes of the fallen opened on Independence Square.
The Holocaust. On 19–20 February 1942 the occupiers shot between 350 and 650 Jews in Sumy, and about a thousand in all by estimates. The victims were held in the flying club building and shot near the Central cemetery. In late February 1943 at least 250 Hungarian Jews from labour battalions were killed near the railway station. A memorial to the Roma genocide stands in the yard of School No. 8, where a Roma family was shot during the war.
Lenin and decolonisation. On 22 February 2014 activists toppled the city's last Lenin, a 16-tonne bronze in Durivshchyna park; the bust by the Khimik palace had been removed on 6 February. The "victims of the revolution" monument at the Central cemetery was dismantled under a 2015 decision, and in 2025 the Ministry of Culture delisted the Makarenko monument, which is now due for removal.