The St. Nedelya Church in Sofia, Bulgaria was attacked on April 16, 1925. A group of Bulgarian communists blew up the church's dome during the funeral service of General Konstantin Georgiev, who had been killed in another communist attack two days earlier. About 200 people were killed at St. Nedelya, largely from the country's political and military elite, and around 500 were injured.
The attackers' main target, however, the Bulgarian Tsar Boris III, was late for the ceremony and survived, as he had been attending another funeral for the victims of an earlier unsuccessful attempt on his life. After the St. Nedelya assault, martial law was declared and about 450 people were arrested and executed without trial.
Continue to the following caricature about the St. Nedelya assault here.
Source: The National Parliamentary Library of Georgia