Buzz·Posted on Apr 4, 2018Flash Briefing For April 4, 2018Another shooting, this time at YouTube. Also, the Wisconsin Supreme Court election, the first arrest in the Mueller investigation, and some much-needed Cardi B.by alexaflashbriefingBuzzFeed StaffLinkFacebookPinterestTwitterMail Here's what you need to know. Your browser does not support the audio tag. BuzzFeed News / Via buzzfeed.com