Here's why:
* Sundown towns: This term refers to towns that enforced racial segregation by enacting policies that prevented Black people from residing there after sunset. While these towns existed throughout American history, they do not have a single "birth" date.
* Specific crimes: It's possible you're thinking of a specific series of murders that occurred during sunset or in the evening. If this is the case, please provide more context, like the location and approximate year, for a more accurate answer.
To help me understand your request better, please provide:
* Additional details about the term "Sundown Murders."
* Any specific context or information you have.
With more information, I can give you a more accurate and helpful response.