What do the supreme court decisions described in this timeline have in common? 1919: the supreme court upholds charles schenck's conviction for publishing an antiwar pamphlet that interfered with the military. 1969: the supreme court overturns ku klux klan leader clarence brandenburg's conviction for giving a speech supporting violence. 1989: the supreme court overturns gregory lee johnson's conviction for burning an american flag in protest. a. they deal with the rights of the accused. b. they center on freedom of speech. c. they support the public interest over individual rights. d. they are based on the clear and present danger test.