washington u.s. justice department change social media policy follow tweet mistakenly send department official account tuesday call cnn big troll department official say statement staff member public affairs office erroneously use official department justice twitter handle post tweet intend personal account statement identify staff member say person access department social media account revoke go forward justice department public affairs office implement procedural change around use social media account provide additional train employees statement say tweet send early tuesday response cnn story campaign donald trump deny wife melania speech republican nominate convention plagiarize 2008 speech first lady michelle obama cnn big troll lmao petty say tweet late delete justice department say tweet represent department view inappropriate department justice official account justice department take matter seriously continue take appropriate step prevent happen future say statement justice department change social media policy rogue tweet criticize cnn