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.

B. Focus on freedom of expression. They have in common the attitudes taken by the court before the expressions of the individuals. The case of 1919, attacks the individual for his expression against the war. The 1969 case the individual is condemned by the expression of his speech. Case 1989 condemns the individual for his expression of repulsion when burning the flag. The latter case is justified as a conviction for the offense to the flag, while the others are sentences for repression against the rights of expression.