In which circumstance would the U.S. government most likely be able to constitutionally limit a citizen's right to freedom of speech?
O A. A candidate for office harshly attacks his opponent and questions his competency. O B. A comedian tells a joke that mocks the president's new plan to raise taxes. C. A protestor rallies a crowd to break into a politician's home and destroy her property. O D. A racist political activist delivers a speech insulting and belittling racial minorities.