Paragould Cablevision, Inc. v. City of Paragould

finding state action immunity as to a city’s statutorily authorized entry into the cable televisions business | counsel was ineffective for failing to investigate thoroughly defendant’s social history, psychiatric disorders, disadvantaged childhood, and drinking problems in preparation for penalty phase | “[n]one of the information we have discussed was hidden from counsel. References were made to it or it was brought to his attention in the course of his review of materials and his representation of [the defendant]” | “federal claim should not present significant additional facts such that the claim was not fairly presented to the state court”; claims made in state and federal courts must have “at least an ‘arguable factual commonality’ ”