Account-1: @humanprogress (Twitter)Account-2: @humanprogress (Twitter)Scholar: HumanProgress.orgDate: Saturday, April 21, 2018Retweets: 219 retweets(Twitter) Likes: 393 likesBody: "Horrified by the recent gun violence? The murder rate back then [1973] was twice as high as today." - SumnerLink: https://twitter.com/HumanProgress/status/987807698619174912Social Action: authored a viral tweet