How does rosa parks the reader understand her emotions in this excerpt

- Yet every one of these disasters has actually happened somewhere, and many real communities have already suffered a  substantial number of them. A grim specter has crept upon us almost unnoticed and this imagined tragedy may easily  become a stark reality we all shall know.

Explanation:

Pathos is elucidated as one of the three persuasive devices(as stated by Aristotle, the other two being ethos and logos) in which the author emotionally appeals to the audience in order to persuade them and gain their acceptance.

The last excerpt i.e. 'Yet..shall know' from Silent Spring most aptly appeals to the readers' pathos as it discusses a 'disaster' and descriptive words like 'suffered', 'grim', 'unnoticed', 'tragedy', 'stark reality', etc. to describe it which arouses the feelings of pity and sympathy of the audience which assists the author in persuading them to believe in his claim.