Definition: In this task, you are given a text of the article. Your task is to generate a headline (title) for this article.
Input: san francisco -- the first earth day on april ## , #### , was , by all accounts , the beginning of a powerful grassroots movement , helped immeasurably by a famous tv commercial that premiered on earth day #### of an indian shedding a tear as he saw pollution all around him .

earth day activism marks ## years