For the record, according to grok;
No one knows the exact number of people throughout history who have shot someone while under the influence of marijuana, as comprehensive global historical records do not exist, toxicology testing is a modern practice (widely used only in recent decades), and many incidents go unreported, untested, or lack clear evidence of acute intoxication at the time of the act.
Scientific evidence and studies indicate that acute marijuana intoxication is rarely directly linked to violent shootings. Most peer-reviewed research shows a weaker or no causal connection between cannabis and violence compared to substances like alcohol, with some reviews concluding cannabis may even reduce aggression in many users.
Associations often stem from correlation (e.g., chronic users having higher rates of mental health issues or involvement in high-risk lifestyles) rather than causation during intoxication.Key Insights from Studies and DataIn homicide victims (not perpetrators), toxicology data from 2004–2016 across 9 US states showed ~31% tested positive for marijuana (often chronic markers, not acute high), compared to ~37.5% for alcohol. This reflects presence, not necessarily intoxication causing the incident.
Mass shootings: Some perpetrators had histories of cannabis use, but evidence of being high during the act is scarce and anecdotal. Claims linking many shooters to marijuana are often criticized as cherry-picked correlations.
Documented cases of shootings explicitly tied to acute marijuana intoxication are extremely rare. One notable example is Richard Kirk (2014), who claimed edibles caused hallucinations leading him to shoot his wife (he pleaded guilty and was sentenced to 30 years). Other high-profile violence cases involve cannabis-induced psychosis but typically stabbings, not shootings.
Broader reviews (e.g., meta-analyses) find moderate associations between cannabis use and violence in certain groups (e.g., those with psychosis or heavy users), but acute intoxication is not a strong predictor of gun violence—unlike alcohol, which has a well-established link.
In summary, while a small number of incidents may exist (likely in the low dozens or fewer documented modern cases worldwide tied directly to intoxication), the total historical figure is effectively unknown and probably very low relative to other causes of gun violence. The evidence does not support marijuana intoxication as a significant driver of shootings.