sentences:  Justice Powell was prompted to write by "the gravity of overruling part of so important a decision".Powell noted that the considerations of stare decisis operated in both directions in this case, and that this case was different than the usual case where the Court is asked to overrule a precedent, reasoning that on the one hand, there are cases ruling that municipal entities are not "persons" under the statute, but on the other hand cases holding school boards liable.Powell also wrote that there were still substantial line-drawing issues regarding what constitutes a policy or custom.