DiCaprio would go on to discuss global warming at the Oscars a few weeks later, after winning his first Academy Award.

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It's hard to say how much of an effect these celebrity rants actually have on the public. The Fix's Aaron Blake took a look at some historical polling on how much people actually care. He boils it down to one central question:

There are basically two camps right now on ever-partisan social media: Those who think Meryl Streep's speech Sunday criticizing President-elect Donald Trump at the Golden Globes was great, and those who think this kind of thing is basically Why Donald Trump Won — i.e., elite Hollywood liberals going after the guy blue-collar voters chose to be their president.

That same dynamic emerged when DiCaprio gave his speech last year — and, in fact, is ever-present in the long history of political speeches at these shows.

Take Marlon Brando's 1973 Oscar win for "The Godfather." Brando declined to attend the show himself, or accept his award, in protest of poor treatment of Native Americans by the film industry, instead sending Native American activist and Apache tribe member Sacheen Littlefeather in his place. Littlefeather was booed by some members of the audience, while others clapped over the booing.

In more recent years, various actors and directors have used the popularity of their films to highlight specific issues.

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In 2000, screenwriter John Irving won the Oscar for "The Cider House Rules," and used his time to thank the Academy for honoring a film that tackles abortion:

And more recently, in 2010, the filmmakers behind the documentary "The Cove," an expose on dolphin-hunting practices in Japan, held up a sign urging viewers to text a number to get more information on the subject:

But most of the Hollywood celebrities who make political statements out of their award wins have historically fought for a specific issue, rather than attacking a politician by name, like Streep did last night.

One other Hollywood celebrity who went directly after a president, though, was Michael Moore, who after winning the Oscar for Best Documentary Feature in 2003, took the opportunity to blast President Bush over the impending invasion of Iraq.