Porter v. Texas

How later courts describe this case

• commission of armed robbery eleven days prior to shooting admissible to show motive was to avoid apprehension
• letters and reports maintained by federal parole officer regarding defendant were not admissible as prepared in part with view toward revoking parole
• no injury as a result of court’s failure to grant request for attachments
• evidence of earlier psychological problems not enough to show defendant incompetent to stand trial
• appellant's commission of a robbery eleven days before his murder of a police officer admissible because the prior crime created an inference that his motive for murder was to avoid apprehension