This is a dataset of ids for tweets purchased from Twitter as part of the Beyond the Hashtags study http://cmsimpact.org/resource/beyond-hashtags-ferguson-blacklivesmatter-online-struggle-offline-justice/ The dataset includes a year of tweets that mention one or more of 45 keywords associated with the BlackLivesMatter movement. This period covers a critical time in which social media was used to raise awareness about police killings of unarmed Black citizens in the United States.