People
These senators have heard from their constituents — who polls show overwhelmingly favored expanding background checks. And still these senators decided to do nothing. Shame on them.
— Gabrielle Giffords

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker says senators knew most of their voters wanted broader background checks, yet chose not to act. Polls are offered as support for that charge. The final words turn anger at the decision into a direct call for shame.
Context reviewed