In the immediate aftermath of the Assassination of President Kennedy by Lee Harvey Oswald (and subsequent assassination of Oswald by Jack Ruby): Many citizens endorsed Ruby's crime.
The letter of the law was set aside by patriotic (and admittedly misguided) folks as they expressed their feelings in correspondence to Jack and also to the officer (District Attorney) who would seek to punish Jack for his "deed".
We owe a debt of gratitude to Dallas County District Attorney Henry Wade for not destroying documents that provide a fascinating historical insight (oversight?) into the momentous events of 22 November to 24 November 1963.
Paragraph 2 of the letter reveals a man distraught with burning anger: Almost sane in its craziness.
Paragraph 3 of the letter would have thrilled Jack Ruby. I wonder if Hank Wade sent him a copy?
Paragraph 5 is incomparable in the history of correspondence: An ordinary citizen using his constitutional right of free speech to advise (set straight) some big-shot public servant of the right thing to do.
Keep in mind; this is before personal computers, word processors, the internet etc. Note the font that looks at a glance "all UPPER CASE", predicting the "shout formatting" on today's forums and blogs. Mr McNelis was ahead of his time. He must have slaved over a typewriter (without benefit of correction fluid) producing many drafts before his masterpiece was completed.
Congratulations and Rest In Peace... Donald J. McNelis (American patriot).