Robert Downey Jr. turned 60 on April 4, and his son Indio Downey, 31, shared a touching Instagram post to mark the milestone on April 5. The post featured a throwback photo of the father-son pair.

Happy 60th birthday, @barackobama." Others also took to Twitter to celebrate the former president on his birthday, with current White House Press Secretary Jen Psaki writing, "I guess my former ...