Famous Insults by ESB

In a July 2015 tweet, Five Thirty-Eight's Nate Silver called Donald Trump "the" what oft-reviled band "of the Republican presidential candidates"?

In his review of the box-office disaster ~Heaven's Gate~, Roger Ebert described it as "the most scandalous cinematic waste I have ever seen--and remember, I've seen" what 1969 movie musical?

Critic Vivian Mercier famously described what 1953 play as "Nothing happens. Twice."

Which TV figure's insults include "I don't know what cats being squashed in Lithuania sound like, but now I have a pretty good idea"?

The New York Times' Julian Street described what ARTIST's seminal work as "resembling an explosion in a shingle factory?"

A Washington Post review states "a million monkeys with a million crayons would be hard-pressed in a million years to create anything as cretinous as" which infamous box-office bomb, which Jon Stewart called "a cross between ~Star Wars~ and the smell of ass"?

Aaron Copland described listening to what British composer's Fifth Symphony as "like staring at a cow for 45 minutes"?

Charles Baudelaire remarked that he "grew bored in France because everybody here resembles" what other French author, "the king of nincompoops and the prince of the superficial"?

Which British politician declared that "Americans always try to do the right thing--after they've tried everything else"?

Speaking of British politicians, who said of his main rival: "If [he] fell into the Thames, that would be a misfortune, and if anybody pulled him out, that, I suppose, would be a calamity"?

After Gore Vidal disavowed what infamous film after his original screenplay was altered, director Tinto Brass (who also later disavowed the film) retaliated by saying "if I ever get really mad at Gore Vidal, I'll publish his script"?

Speaking of Gore Vidal, Vidal described what fellow author as "He's a full-fledged housewife from Kansas, with all the prejudices"?