It is difficult to determine an exact number of black serial killers in history, as the term “serial killer” was not widely used or recognized until relatively recently. Additionally, statistics on race and crime have historically been subject to biases and limitations, making it difficult to accurately track the demographics of serial killers over time.

However, there have been several documented cases of black serial killers throughout history. One notable example is Wayne Williams, who was convicted of killing two adult men in Atlanta in the early 1980s, but was also suspected of being responsible for many more deaths. Another example is Carlton Gary, who was convicted of killing three women in Columbus, Georgia in the late 1970s, but is believed to have been responsible for several more murders.
Other black serial killers who have been identified and convicted include Derrick Todd Lee, who killed at least seven women in Louisiana in the early 2000s, and Chester Turner, who was convicted of killing at least 14 women in California between 1987 and 1998.
While the number of documented cases of black serial killers is relatively small compared to the overall number of serial killers in history, it is important to note that this does not mean that black people are inherently more or less likely to be serial killers than people of other races. The factors that contribute to serial killing are complex and multifaceted, and can include a range of psychological, social, and environmental factors.
It is also important to acknowledge that statistics on race and crime have historically been subject to biases and limitations. For example, some studies have suggested that black people are more likely to be falsely accused or wrongfully convicted of crimes than people of other races, which could potentially impact the number of black serial killers who have been identified and convicted.
Overall, while there have been several documented cases of black serial killers throughout history, it is important to approach this topic with sensitivity and nuance, and to avoid making broad generalizations about race and criminality. The complex and multifaceted nature of serial killing means that there is no simple or straightforward answer to the question of how many black serial killers there are in history.