OPINION OF THE COURT

Edward V. Rochford, the Sheriff of Morris County, and Undersheriff Jack Dempsey contend that the District Court erred in denying their qualified-immunity summary judgment motion as to William Carroll’s 42 U.S.C. § 1983 claim alleging a violation of his constitutional right to freedom of association. As a pure question of law is at issue, we exercise plenary review over a District Court’s decision. McLaughlin v. Watson, 271 F.3d 566, 570 (3d Cir. 2001), cert. den., 535 U.S. 989, 122 S.Ct. 1543, 152 L.Ed.2d 469 (2002).

Government officials performing discretionary functions are afforded qualified immunity from civil damages in suits brought *126 pursuant to Section 1983. Harlow v. Fitzgerald, 457 U.S. 800, 819, 102 S.Ct. 2727, 73 L.Ed.2d 396 (1982). A two-part standard is used to determine whether public officials are entitled to qualified immunity. Saucier v. Katz, 533 U.S. 194, 200-02, 121 S.Ct. 2151, 150 L.Ed.2d 272 (2001). First, a court must determine (based on the view of the facts that is pertinent to the procedural stage at which the motion is made) whether the official’s conduct violated a constitutional right. Id. at 201. Second, if the facts show that a right has indeed been violated, a court must determine, as a matter of law, whether the constitutional right was “clearly established” at the time of the official’s action. Id. 1 This second step of the analysis requires a court to both define the right at issue with a sufficient degree of specificity, Anderson v. Creighton, 483 U.S. 635, 640, 107 S.Ct. 3034, 97 L.Ed.2d 523 (1987), and to analyze the facts of the case in light of relevant case law extant at the time of the alleged conduct. McLaughlin v. Watson, 271 F.3d 566, 572 (2001). If a motion for summary judgment based on qualified immunity is denied, the defendant may under some circumstances take an immediate appeal under the collateral order doctrine. See Johnson v. Jones, 515 U.S. 304, 312, 115 S.Ct. 2151, 132 L.Ed.2d 238 (1995).

In Forbes v. Township of Lower Merion, 313 F.3d 144, 146 (3d Cir. 2002), we announced a supervisory rule that applies when a District Court denies a qualified immunity summary judgment motion. This rule requires District Courts to “specify those material facts that are and are not subject to genuine dispute and explain their materiality.” Id. As we discussed in Forbes, this rule is designed to assist us in determining whether we have jurisdiction to entertain the appeal. Under Jones, “a defendant, entitled to invoke a qualified immunity defense, may not appeal a district court’s summary judgment order insofar as that order determines whether or not the pretrial record sets forth a ‘genuine’ issue of fact for trial.” Id. at 319-20. Rather, a defendant may appeal the District Court’s collateral order only as to the purely legal question of whether the Court made an error of law, in which case “the court of appeals can simply take, as given, the facts that the district court assumed when it denied summary judgment for that (purely legal) reason.” Id. at 319.

The rule announced in Forbes is applicable in the matter now before us as the District Court rejected the defendant’s summary judgment motion, which was based on qualified immunity, upon a determination that “there was a genuine issue of material fact regarding the issue of political retaliation by Defendants.” App. at 9 (Dist. Ct. Letter Order, September 25, 2002, at 3). Our review of the record reveals that the District Court did not identify the particular facts that are in dispute or explain the materiality of those facts in relation to the qualified immunity issue. 2

*127 The District Court’s order was entered prior to our opinion in Forbes, and we do not fault the District Court for failing to comply with a rule that had not yet been announced, but in order to ensure that we do not exceed our jurisdiction, we vacate the order of the District Court and remand for compliance with the Forbes rule. Upon complying with that rule, the District Court should enter a new order granting or denying the motion. If aggrieved, the current appellants can take a new appeal at that time and raise any issues that are properly within our jurisdiction.