I’m not sure the ninth amendment is one that would be specifically violated, but rather it is there for informative purposes.
Take, for example, any case that hinges on the “right to privacy,” say, abortion for example. The purpose of the ninth amendment is to clarify simply that the fact that “right to privacy” does not appear in the constitution does not mean that it is not a right, and that your privacy can be violated by the government willy-nilly.