21. A system for presenting social media content items associated with time-based media events, the system comprising: a computer processor; and a memory storing program code for presenting social media content items associated with time-based media events, the program when executed by the computer processor causing the processor to: generate a graph interface element including a set of positions along a time axis, where each position is associated with a different portion of a broadcasted media event, the graph interface element depicting a measure of a plurality of content items that are authored by one or more users of a social networking system and that have been determined to be correlated with the portions of the broadcasted media event associated with the set of positions; generate a movable interface element that enables selection among the set of positions included in the graph interface element, populate a content timeline interface element with the plurality of content items arranged in chronological order, each portion of the content timeline interface element including content items correlated with a different portion of the broadcasted media event, provide a concurrent display of the content timeline interface element, the graph interface element, and the movable interface element, determine selection of a first of the set of positions based on the movable interface element having been visually moved to select the first position, and in response to the selection of the first position; cause the provided content timeline interface element to vertically scroll to a first portion of the content timeline interface element that includes content items correlated with a first portion of the broadcasted media event associated with the selected first position; extract non-textual content from a plurality of the content items correlated with the first portion of the broadcasted media event; combine the extracted non-textual content to generate a vignette representing the first portion of the broadcasted media event; and include the vignette in a visually distinct portion of the concurrent display.
21. A system for presenting social media content items associated with time-based media events, the system comprising: a computer processor; and a memory storing program code for presenting social media content items associated with time-based media events, the program when executed by the computer processor causing the processor to: generate a graph interface element including a set of positions along a time axis, where each position is associated with a different portion of a broadcasted media event, the graph interface element depicting a measure of a plurality of content items that are authored by one or more users of a social networking system and that have been determined to be correlated with the portions of the broadcasted media event associated with the set of positions; generate a movable interface element that enables selection among the set of positions included in the graph interface element, populate a content timeline interface element with the plurality of content items arranged in chronological order, each portion of the content timeline interface element including content items correlated with a different portion of the broadcasted media event, provide a concurrent display of the content timeline interface element, the graph interface element, and the movable interface element, determine selection of a first of the set of positions based on the movable interface element having been visually moved to select the first position, and in response to the selection of the first position; cause the provided content timeline interface element to vertically scroll to a first portion of the content timeline interface element that includes content items correlated with a first portion of the broadcasted media event associated with the selected first position; extract non-textual content from a plurality of the content items correlated with the first portion of the broadcasted media event; combine the extracted non-textual content to generate a vignette representing the first portion of the broadcasted media event; and include the vignette in a visually distinct portion of the concurrent display. 29. The of claim 21 , wherein the program when executed by the computer processor further causes the processor to generate a mute interface element that, when selected, prevents the displayed content timeline interface element from being updated with new content items correlated with the broadcasted media event.