Atrocity
noun
An extremely cruel act; a horrid act of injustice.
“The regime is guilty of mass atrocities including forced displacement and the use of chemical weapons.”
The quality or state of being atrocious; enormous wickedness; extreme criminality or cruelty.
An object considered to be extremely unattractive or undesirable.
Synonyms: abomination, atrociousness, brutality, heinousness