All 4 Uses

affirm
in
The Boy on the Wooden Box
(Auto-generated)

The ritual affirmed who we were despite the humiliating restrictions outside our door.
p. 75.6

affirmed = demonstrated
Actors and musicians resisted by creating makeshift stages in hidden courtyards and performing plays and skits and holding concerts, affirming that beauty and culture could exist even in the midst of the horrible circumstances of the ghetto.
p. 83.5

affirming = demonstrating
As I think back to that moment, it seems like we ripped them off in unison, an affirmation of our solidarity and victory.
p. 165.5 *

affirmation = demonstration
In those peaceful times, such a comment wasn't meant in a hostile way, but as an affirmation of how strange we seemed to those whose religious practices differed from ours.†
p. 17.6 *

Definitions:

(1) (affirm as in: I affirm the statement)
to firmly state that something is true
(2) (affirm as in: affirmed her child's efforts)
to demonstrate support or demonstrate the truth of something
(3) (meaning too rare to warrant focus)