(Undated)--The communications director for the city of Providence's planning department is resigning over a controversial tweet.Cranston Mayor Allan Fung posted a screen shot of the tweet from Kevin Aherne, who said Cranston police were criminalizing poverty, with a picture of police interacting with people standing in a median, followed by a four-letter word phrase that replaced the word with Fung's name.Fung shot back that it wasn't a Cranston police car; it was apparently from Warwick.Providence Mayor Jorge Elorza called the tweet inexcusable and issued an apology on behalf of his city.