The motives of the latest person(s?) to mail Ricin to the president seem fairly clear to me. via TPM
According to the affidavit, further analysis of the computers in the Richardsons’ home revealed online orders for castor beans and other materials used to make ricin. Spiropoulos said analysts also found files titled “Obama.docx” and “muslimbastard.docx” were saved onto a storage device from the “pink Dell laptop that both Shannon and Nathaniel Richardson acknowledge belongs to and is used exclusively by Shannon Richardson.”
muslimbastard.docx