Conversation so far:
why was the case of gitlow vs new york important
It was a case that defined the scope of the First Amendment's protection of free speech.
when did the case gitlow v. new york happen
The case Gitlow v. New York arose from the conviction of Socialist politician and journalist Benjamin Gitlow for the publication of a left wing manifesto in 1919.

Question: why did the case happen
Self-contained rewrite: why did the case of gitlow v. new york happen