https://thenextweb.com/socialmedia/2018/06/09/twitter-troll-teaches-a-masterclass-in-how-to-be-an-asshole/

The dust hadn’t even settled in the concert venue before David Leavitt’s first ill-advised joke. After an explosion killed 22 people, including children, and wounded 59 others at a Manchester, England arena, Leavitt didn’t hesitate. Being first matters, even in tragedy, and especially on Twitter.

With a click of the send button, the tweet landed, with a thud, to the disbelief of nearly all who saw it. But Leavitt, a freelance writer with bylines at “CBS, AXS, Yahoo, Examiner, etc.” was oblivious.