The post-October 7th period has been a period of redefinition for many Jewish American undergraduates and particularly for those who identify as politically left-of-center and who found themselves encountering anti-Israel and antisemitic attitudes among peers and organizations they had been part of previously. Via in-depth interviews with Jewish American undergraduates and their non-Jewish peers, this study documents undergraduates' realignments of their Jewish and political identities and examines how those identity changes explain the students' decisions to engage in, or avoid, discussions with peers about October 7, the war in Gaza and the broader Middle East conflict, and/or rising U.S. antisemitism.