What is the central point of wiesel's nobel prize acceptance speech?

That there should be no injustices

Explanation:

He is standing for that in the world shouldn't be allowance of injustices that are moving trough. Everyone shall be free to tell what is something that is bothering them if it is not right, no one should be quiet about injustice. People should be fair one to another because that is something that would truly help and that there should not be discrimination in this world.

"facing the rising sun of our new day begun

let us march on till victory is won.",

because the rising sun is a symbol of hope.

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.