On the evening of Dec. 7, minutes after a local Indiana union leader, Chuck Jones, criticized Donald Trump on CNN for falsely claiming that he had kept 1,100 Carrier jobs in the United States, Mr. Trump tweeted, "Chuck Jones, who is President of United Steelworkers 1999, has done a terrible job representing workers. No wonder companies flee country!"
Since that tweet went out, some news organizations have reported that Mr. Jones has received death threats.
A few days before, Boeing CEO Dennis Muilenburg was quoted in the Chicago Tribune gently chiding Mr. Trump for being against trade.
Soon after, Mr. Trump tweeted: "Boeing is building a brand new 747...