All 3 Uses

solidarity
in
Uprising, by Margaret Peterson Haddix
(Auto-generated)

It'd been even more incredible than she'd imagined: the surge of solidarity she felt with her fellow workers, the dizzying relief of finally saying out loud, in a way the bosses couldn't ignore, "This isn't fair!†
p. 34.2
But it was warm around her shoulders, and it made her feel a solidarity with Bella, who'd also huddled in a blanket in her moment of tragedy: Bella had lost her entire family, and now Jane had to break away from her father, because he was an evil, evil man.†
p. 198.3 *
"No," Yetta said, but she grinned at the girl, and the girl grinned back, and Yetta thought maybe, just maybe, they'd inched just a little closer to the solidarity Yetta longed for.†
p. 269.9

Definitions:

(1) (solidarity)
a state of agreement and support -- especially for political action
(2) (meaning too rare to warrant focus)