Fred had dementia the last six years of his life. There may be a genetic component. As Josh said, Trump used to make more sense, in a boastful sort of way.
Also, "Afro American" reminds me that I owe Mayor Pete an apology. His surname looked Norwegian to me, and those cheeks provided what I thought was confirmation, but it turns out he has not one drop of Nordo-American blood, and the surname is Maltese. Some Norwegian names have an "ieg" ending, that's what threw me off. That, and a video I saw where he was surreptitiously stuffing herrings into his mouth.