From The Guardian:
The family of Tom Petty has issued a formal cease and desist letter to the Donald Trump campaign over its use of his song I Won’t Back Down at a rally in Tulsa on 20 June.
I loved Tom Petty's recordings and was shocked and saddened when he died. He was an astonishing songwriter and performer, but he also had time for his fans. When I was on Twitter, one of my most treasured responses was a "thanks!" from the man himself, for some comment I'd made about his music. It made my day (my week, even), but I've no doubt that it was merely one of thousands of typically kind responses.
Tom Petty's music continues to shine, and will be listened to long after Trump is (at best) a footnote.