TSA worker assaults boss after responding to boss's insult

The following story appeared in the Daily Tech on May 7:
================================
Rolando Negrin, 44, had a pretty good life including a steady job with the Transportation Security Administration. However, when he stepped into a full body scanner during a training session and it revealed him to have rather small genitalia, he quickly became the butt of his supervisor's jokes.

Filled with rage at the insults to his manhood, Negrin confronted his boss in the airport parking lot, armed with a police baton. He struck the man on the arm and back. A police report describes, "[Negrin] then told victim to kneel down and say 'your sorry'. Victim stated he was in fear and complied with [Negrin]."
========================

I am not interested in discussing the use of full body scanners, in general, I approve of them and believe even more needs to be done to keep us safe.
There must be some insults that are considered fighting words. Why was the supervisor not arrested for causing the incident? Can any male think of a more insulting statement that deriding another's male sexual prowess?
I hope Mr. Negrin is exonerated, or that at least his tormetors lose their positions as well.
Leon