Breaking rules of courteous conduct (and come on, you would expect an Aspie to get upset at someone cutting in line- I know I still do), threats of physical violence, and making fun of someone with a neurologic condition by calling them "ret*d" is undoubtedly worse than one ill-judged comment made in a stressful situation, especially when that comment was later apologized for. The girl never apologized for her profanities, threats, rudeness, or intolerance.
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WAR IS PEACE
FREEDOM IS SLAVERY
IGNORANCE IS STRENGTH