rock (something) to its foundations

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rock (something) to its foundations

To impact something in a way that affects its very essence, especially concerning its values or beliefs. The election of the outsider candidate rocked the party to its foundations, and led to a lot of soul-searching among its members.
See also: foundation, rock
References in periodicals archive ?
The East End of Glasgow will rock to its foundations and, once again, I stress Celtic cannot leave the backdoor open.
As night fell, the Manic Street Preachers played new material that will shake British rock to its foundations.