Final answer:
Dr. Thomas Palmer was arrested for refusing to disperse during an ordered evacuation, which was seen as a spontaneous protest against the government. The question appears to confuse D.D. Palmer with Dr. Thomas Palmer. D.D. Palmer was arrested for practicing medicine without a license, not the reasons mentioned in the question.
Step-by-step explanation:
The individual referenced in the question appears to be Dr. Thomas Palmer, who was a surgeon during a time of war. The scenario described does not pertain to D.D. Palmer, the founder of chiropractic, but rather to Dr. Thomas Palmer who was arrested for not dispersing when Governor Letcher ordered it. Dr. Thomas Palmer was at the corner of 15th and Main when the order to disperse was given, but he alone refused to obey, leading to his arrest. It seems that he was conducting a spontaneous protest against the government, and not participating in the riot for bread or looting stores. There is a confusion in the question since D.D. Palmer was arrested in 1906, but for a different reason - practicing medicine without a license.