LSD in 60s and early 70s dosage caused for some panic attacks and psychotic behavior like disassociation and depersonalization
But not violence not from my experience with the drug
Not from what I saw
However I think LSD definitely played a role in Charles Mansons ability to mind warp Tex Watson and Bobby Beausoleil and a bunch of college aged hippie pass around girls to butcher people cause he was mad at the world
Some people are eminently warpable. Some people are very good at spotting them and warping them. The drugs just greased the skids.