Late Thursday night, as the RNC convention was winding down, a Tweet went out from the official account of Rep. Keith Ellison (D-MN): 

"Nothing like 80's coke addicted James Brown to close out a Republican convention #GOPconvention"

A few moments later, the Tweet was deleted, and an unnamed Ellison staffer sent out the following message: 

"I work for Rep Ellison & tweeted from this acct a comment about James Brown. Rep Ellison did not send the tweet & I apologize for the error."