How do you think jackson might have countered his critics' accusation that he was acting like a king?

Jackson believed he used the power of his office to preserve democratic principles and  serve the best interests of the common people. 

Andrew Jackson, the 7th President of the United States of America, was nicknamed the "people's president". He became involved in a battle with the Second Bank of the United States. It was a private corporation, in theory, that actually served as a government-sponsored monopoly. He saw the bank as a corrupt, elitist institution that wielded too much power over the economy by manipulating paper money and its circulation. Using his presidential powers, he vetoed the re-charter of the Second Bank of the United States for the reason that it backed “the advancement of the few at the expense of the many.” 

Andrei karlov was the russian ambassador