How does kennedy's introduction in paragraph
1 foreshadow the central idea of his speech?

Kennedy's main aim to separate communist and democratic nations.

Explanation:

President "John F. Kennedy" in his inaugural speech stressed on amity between East and West Berlin. He not only speaks to Americans but to all the nations in the world.

He conveyed that we should achieve freedom and peace as everyone around the world deserves freedom. We should pay any price or face any kind of hardship to gain liberty. We should only think what we can do for our country. Russia was a communist country then. He even thought of extending help to them to fight against communism. So, the first [paragraph gives the central idea of his speech that there should be hope, belief and strength in Americans to work together for peace and freedom.

as for symbolic actions, the narrator's tearing down the wallpaper in an attempt to find the "woman" in the wallpaper represents her struggle to retain or regain her sanity.   the wallpaper has been part of her confinement and by her tearing it down, she is freeing herself from that confinement.