Answer:
Crimes in humanity still could happen in modern day and some of those crimes are still happening now.
Step-by-step explanation:
The crimes of against humanity, in contrast to genocide and war crimes, have not yet been codified in a specific treaty of international law, despite ongoing attempts to codify the crimes. Yet, the prohibition of crimes against humanity, like the prohibition of genocide, has long been seen as a peremptory norm of international law, from which no deviation is authorized and which applies to all states without exception.