"Assembly line justice" is a colloquial term used to describe a patterned, or template, approach to criminal cases. Each case is prosecuted, judged, and punished in a similar manner regardless of the individual circumstances or complexities of the matter at hand.
Despite the ominous sound of the term "assembly line justice," such an approach is useful in guaranteeing the equal application of the law to all persons, regardless of their circumstances. Equal protection being a cornerstone of the modern, liberal democracy, "assembly line justice" may be analogous to "blind justice," a jurisprudential ideal.
On the other hand, however, the real world application of "assembly line justice" may not be in the equal application of the law to all persons but in the equal application of the law to all persons of a certain class, such as the poor. By not allowing for consideration of the unique factors and circumstances of every criminal case, "assembly line justice" risks becoming a draconian type of enforcement mechanism.