• Her publicist also warns her that Trump could personally come after her — to which Swift responds, "F--k that. I don't care."

The big picture: Swift's Instagram endorsement of Bredesen, who eventually lost the race, called out his Republican opponent, Sen. Marsha Blackburn, for voting against reauthorizing the Violence Against Women Act and refusing to support same-sex marriage.

• In the documentary, Swift rails on Blackburn: "I can't see another commercial [with] her disguising these policies behind the words 'Tennessee Christian values. I live in Tennessee. I am Christian. That's not what we stand for."
• She also calls her "Trump in a wig."

Flashback: Swift cites the backlash to the Dixie Chicks' decision to speak out against former President George W. Bush in 2004 as a reason for why she kept silent on politics for so long.

• "My moral code as a kid and now was the need to be thought of as good. Overall, the main thing I always strived to be was, like, a good girl," she says to open the documentary.

Go deeper: Taylor Swift explains why she didn't endorse Hillary Clinton in 2016

• Ocasio-Cortez, one of the most popular progressive politicians in the U.S., had a 45-minute phone conversation with Corbyn soon after she took office earlier this year, per CNN. The pair of democratic socialists discussed how to "build a movement across borders."

The other side: President Trump is backing Prime Minister Boris Johnson's Conservative Party, as completing Brexit would clear the way for the bilateral U.S.-U.K. trade relationship that Trump favors over negotiating with the European Union.

• But even Johnson, one of the few European leaders with whom he has genuinely warm relations, was careful not to get too close to Trump during the NATO summit in London earlier this month.

The big picture: A key election forecast earlier this week showed the Conservatives' lead shrinking ahead of today's election, though it still forecasted a solid victory for Johnson's party.

• Labour has faced a number of scandals, including an ongoing anti-Semitism controversy in the party that caused the U.K.'s chief rabbi to label Corbyn unfit to be prime minister.

Go deeper: Boris Johnson accused of hiding in refrigerator to avoid TV interview

• The chorus contains the lyrics: "All the other kids with the pumped up kicks / You'd better run, better run, outrun my gun / All the other kids with the pumped up kicks / You'd better run, better run, faster than my bullet."

What he said:

"I've been thinking about retiring the song and just not playing it live anymore. I can't ask other people not to play it live, but the public made the song what it is — and if the song has become another symbol for something, I can't control that. But I can control my involvement in it.

"The way that people perceive the song is their choice, and it becomes a separate entity that I don't have control over. But I do have control over whether I'm going to take part in playing it over and over again. It's like pushing your song in somebody's wound — I don't really want to do it."

The big picture: Foster also reflected on how the song was censored and taken out of rotation by MTV and some radio stations after the Sandy Hook Elementary School shooting in 2012, saying "that a three-minute song can make somebody more uncomfortable than a two-hour movie."

• "And I guess maybe it's the fluidity of it too — like, when something is being played everywhere around the world for a month or two, you hear it everywhere, and you really don't have a choice."

Go deeper: More than 800 independent musicians plot Amazon boycott over work with ICE