(citation omitted). Once the plaintiff succeeds in meeting his burden, the burden of proof shifts to the defendant to show, by a preponderance of the evidence, “that it would have reached the same decision to discipline the employee in the absence of the protected speech.” Berdin v. Duggan, 701 F.2d 909, 911-12 (11th Cir.1983); Waters v. Chaffin, 684 F.2d at 837.
Appellants experienced no difficulty in meeting the first of their burdens, that of showing that their activity was a “substantial” or “motivating” factor in their dismissals. Appellees virtually concede as much. Chief McGuffey testified the officers were dismissed for the flag incident. Director Sargis stated that the flag incident was the culmination of a “crescendo” of activity, that he could not have seven officers act as appellants did and not dismiss them. Because the Police Hearing Board failed to make findings it is impossible to know which charges carried what weight in the decision to uphold McGuffey’s decision. Nevertheless, Board members who testified at trial indicated they affirmed the dismissals on the basis of all the charges. “The opinion in Mt. Healthy clearly contemplates that a decision may be the product of more than one substantial factor; it refers to ‘a substantial factor.’ ” Bowen v. Watkins, 669 F.2d 979, 984-85 (5th Cir.1982) (emphasis in Bowen). Beyond dispute, appellants have met the first half of their burden.
The law underlying whether appellants’ activities were protected under the first and fourteenth amendments is more complex. We must weigh “the interests of the [employee] as a citizen, in commenting upon matters of public concern and the interests of the State, as an employer, in promoting the efficiency of the public services it performs through its employees,” Pickering, supra, 88 S.Ct. at 1734-35. The facts of each case will affect the balance uniquely; in this case we weigh the conduct of officers that goes beyond “pure speech,” Tinker v. Des Moines Independent School Dist, 393 U.S. 503, 508, 89 S.Ct. 733, 737, 21 L.Ed.2d 731 (1969) against the interest of the City of Columbus in seeing that its police services, a function traditionally accorded special respect, remain effective, see Waters, supra, 684 F.2d at 839 (more deference accorded police in Pickering balance due to fact that safety of property and person at issue); Wilson, supra, 658 F.2d at 1027 (same).
We address initially the interests of appellants, and conclude that despite the fact that the activities of appellants involved conduct as well as “pure speech” their interest in expressing themselves was substantial. Three factors lead to this conclusion. First, the conduct here at issue was symbolic speech, closely “akin to pure speech,” Tinker, supra, 393 U.S. at 508, 89 S.Ct. at 737. The conduct of the officers involved no violence or disorder: they peacefully removed the American flag from their uniforms. Representing as it does precepts fundamental to this nation, the American flag frequently has been the focal point of suits involving freedom of expression. Spence v. Washington, 418 U.S. 405, 94 S.Ct. 2727, 41 L.Ed.2d 842 (1974); Street v. New York, 394 U.S. 576, 89 S.Ct. 1354, 22 L.Ed.2d 572 (1969); West Virginia State Board of Education v. Barnette, 319 U.S. 624, 63 S.Ct. 1178, 87 L.Ed. 1628 (1943). Significantly, the officers in no way mutilated or defaced the flag; rather in their view they expressed their deep respect for it and the principles it represented. Removal of the patch under these circumstances bears great similarity to pure speech. Second, although we do not evaluate the content, or “social worth” of ideas, Williams, supra, 629 F.2d at 1003, certain types of speech traditionally are accorded greater protection in our society by virtue of the fact that the speech goes to the heart of our democratic process. See Connick v. Myers, -U.S. -, -, 103 S.Ct. 1684, 1689, 75 L.Ed.2d 708 (1983) (speech on “public issues occupies the ‘highest rung of the hierarchy of First Amendment values’ ”); Pickering v. Board of Education, supra, 88 S.Ct. at 1737 (debate on matters of public importance “core value” of the Free Speech Clause of the First Amendment); Williams, supra, 629 F.2d at 1003 (when matters vital to the public interest at