The Facts on Mental Illness and Mass Shootings

Q: Do people with serious mental health disorders pose a greater risk of becoming mass shooters?
A: People with mental illnesses are somewhat more likely to be violent than those without a diagnosis. But a majority are never violent, and very little is known specifically about mass murder.
FULL QUESTION
Subject: Mental illness and mass shootings
Is Trump correct that people with mental illness, such as schizophrenia and bipolar [disorder], [are] a greater threat to society?
FULL ANSWER
Following two mass shootings over a single weekend in August,...