Krvavé sonety (A song of blood) is a collection of 32 sonnets by Pavol Országh Hviezdoslav (1849−1921), the pseudonym of the Slovak poet, writer, and lawyer Pavol Országh. Hviezdoslav was an important writer and one of the leading personalities in Slovak literature and culture at the end of the 19th century and the early 20th century. This cycle of poems is the poet’s protest against World War I. The book is a strong reaction to what Hviezdoslav saw as the oppression and humiliation of humanity brought about by the war and is a summary of the poet’s social, philosophical, and moral views. In the final sonnets, Hviezdoslav expresses his desire for peace and his belief in a more just world order. Although the author wrote the poetic cycle in 1914, shortly after the outbreak of the war, the book could be published only in 1919.