Answer:
In the need for Freedom of Speech
Explanation:
While Justice Oliver Wendell Holmes is considered to be a protector of the United States First Amendment which deals on the issue of Freedom of Speech and Press, Justice Hugo Black, on the other hand, was also an advocate of the First Amendment, which he claimed that, is a means to protect the people rather than those holding the governmental powers.
Hence, in this case, the right answer is Justice Holmes and Justice Black most likely believes "In the need for Freedom of Speech."