In Section 1983 first amendment retaliation case, membership in a political association is considered speech protected by the first amendment.

“The content—support for Kaelin’s opponent—and form—participation in a PAC—of the speech at issue clearly support the notion that it involved matters of public concern, as we have previously held that there can be no question that . . . associating with political organizations and campaigning for a political candidate related to a matter of public concern.”  At *5 (quotations omitted).

Cox v. Kaelin, — Fed. Appx. –, 2014 WL 3866128, at *5 (5th Cir. Aug. 7, 2014) (Clement, Graves, JJ.).