Methods and systems are provided for retroactive removal of content from an organization activity timeline of an organization. The content removed can be, for example, past activities or contributions to those past activities. The organization activity timeline is displayed within a user interface to show activities involving a particular external contact and one or more users of the organization. The disclosed methods and systems can be used to control which activities, or contributions to activities, are displayed in the organization activity timeline. One or more identifiers can be added to one or more blacklists. Past activities that are part of the organization activity timeline can be evaluated to determine whether those past activities include the identifier. If so, those past activities (or contributions to those past activities) are removed from the organization activity timeline.