Furthermore, former lawyer Harvey Slovis told Ethics Alarm that glasses are part of what has been dubbed the “nerd defense” in court. And more often than not, clients who wore glasses and dressed well were acquitted, despite the evidence against them.
He explains, “Glasses soften [suspects] appearance so that they don’t look capable of committing a violent crime.” Perhaps that was what Dahmer was thinking too.
Source: https://www.distractify.com/p/jeffrey-dahmer-aviator-glasses