The following is a statement from the DOJ on benzodiazepines, which include Valium.
“Adverse effects include increased reaction time, motor incoordination, anterograde amnesia, slurred speech, restlessness, delirium, aggression, depression, hallucinations, and paranoia. . .
Tolerance often develops after long term use requiring larger doses to achieve the desired effect. . .
Withdrawal symptoms, the severity of which is dependent on the dose, duration of use, and drug used, include anxiety, insomnia, dysphoria, tremors, and seizures.”
And those are just the thing for men with rifles.
Any psychologist can induce these adverse side effects in persons who are mentally healthy in a controlled study and produced statistically significant and observable increases in aggression–and probably the other adverse effects.
The killing in Vegas seems outwardly to be without a motive, but it seems to me like the shooting of Reagan by Hinckley. Hinckley, on Valium, thought that shooting Reagan would impress his desired girlfriend. Most people are going to notice that there is a substantial lack of connection between the act of shooting a political leader and gaining the admiration or love of a girlfriend.
Now, the state legislature apparently thinks that people on Valium should be handling firearms, but I do not.