Let us not forget that courage and being imprisoned on the part of an individual is no guaranty of that individual's righteousness or the correctness of his cause. Hitler was awarded the Iron Cross, Second Class, for his valor during World War I and was imprisoned for attempting to overthrow the Bavarian government during the Beer Hall Putsch. Stalin was repeatedly sent into the wilds of Siberia into exile for his Bolshevik activities. He was by all accounts a rugged and tough man who at one time survived an attack by wolves. Mao and Castro lived the rigorous life of back country guerillas before coming to power. Brave men all, brutal dictators and mass murderers all.
Whether Dr. Dobson is a man of courage or not is irrelevant to his public protest of the removal of the Ten Commandments from the Alabama Supreme Court building. Courage is not a prerequisite to the right to express an opinion. Additionally, courage has been an attribute of numerous evil men throughout history.