David L. Bazelon quotes
In some of our subcultures, paper bags are often used to carry intimate personal belongings. And the sight of some of our less fortunate citizens carrying their belongings in brown paper bags is too familiar to permit such crass biases to diminish protection of privacy.
The majority decision constitutionalizes a distinction between a red leather pouch and a paper bag that is necessarily based at least in some part on economic and class differences and perceptions.