It is an established risk factor. he was wrong to say all are on it.
The vast majority of large mass shooting murders in the US have had serious mental illness. the driver of virtually all large mas murder is mental illness. People saying otherwise pick and choose there definition. here is an objective list that is not cherry picked or anecdote of actual top 28 mass shootings in all but two we know the killers were seriously mentally ill. the one where the person wasn't was gang related :
https://en.wikipedia.org/wiki/Mass_...ed_States#Deadliest_mass_shootings_since_1949
There have been three mass murders by an individual of over 50 people in Europe in past ten years (Breivek Norway, Lubitz, France, and Mohamed Lahouaiej-Bouhlel) -- and in every case the killer had serious mental illness. all three had taken prescriptions for mental illness as well.
Large mass murder: 99% committed by the 1% who are seriously mentally ill
Smaller mass shootings (four or more shot): about 1/4 domestic violence, about 3/4 criminal activity related, in fact most have priors.
but the speaker shoudl have been careful about saying "school shootings" and SSRI. It certainly does correlate with about a 15x increased likelihood, but a) it may not be causal, the SSRI maybe reducing "school shootings" and the underlying mental illness the driving cause; and b) most "school shootings using the broad term used by gun control advocates and most of the press are actually general crime related shootings near schools, and even paint ball incidents
Correlation does not indicate causality, as you pointed out. People are on SSRIs because they are mentally ill. “Normal” people do not take SSRIs. SSRIs are used in a very wide range of psychiatric conditions. They are first line. It is not at all shocking that people sick enough to shoot up schools are:
1. Brought to the attention of psychiatrists.
2. Put on an SSRI.
Mr. Prince alienated at least 10% of his audience. He also poisoned the minds of another very large percentage. His statements were harmful and poorly thought out.