What do 75 ex-diplomats have in common with 27 Hollywood celebrities?

A group of 75 retired career foreign service officers, including ambassadors and senior State Department officials, have denounced Donald Trump as unfit for the US presidency, on the same day that a cohort of Hollywood superstars joined forces to do much the same thing.
The diplomats, who served under Republican and Democratic presidents over nearly a half-century, signed an open letter calling Trump “entirely unqualified to serve as President and Commander-in-Chief.”
The diplomats said “none of us” will vote for Trump. While they said not all of them agreed with every decision made by Hillary Clinton, they said they all supported her candidacy.
“Because the stakes in this election are so high,” the letter said, “this is the first time many of us have publicly endorsed a candidate for President.”
Meanwhile director Joss Whedon drew together a “s*** ton of famous people” to urge voters to get to the polls, while taking potshots at Trump in a video.