The feud between President Donald Trump and veteran rock star Bruce Springsteen escalated Wednesday after the commander in chief posted a doctored video to social media showing him hitting the singer with a golf ball.

Springsteen, long a Trump opponent, began the latest skirmish in the culture war in England last week, where he opened a European tour.

Representatives of several of the entertainers targeted by Trump − all of whom have previously endorsed Democratic candidates for president − rejected rumors that they were paid for their endorsements...