In photos: Trump baby blimp back as protesters rally across U.K.

The Trump baby blimp set up in Parliament Square, London. It was last seen on his previous U.K. visit. Photo: David Mirzoeff/PA Images via Getty Images

Demonstrators inflated a 20-foot blimp depicting President Trump as a baby in a diaper outside the U.K. Parliament in London Tuesday, as mass protests took place across the U.K. on the second day of his state visit. Here are some of the most striking photos.

Anti-Trump protesters hold a placard depicting Trump and Brexit Party leader Nigel Farage in central London. Photo: Isabel Infantes/AFP/Getty Images
Anti-Trump protesters in Trafalgar Square, central London. Photo: Isabel Infantes/AFP/Getty Images
Protesters marched through central London. Photo: Robin Pope/NurPhoto via Getty Images
Anti-Trump protesters hold placards and balloons depicting Trump. Photo: Isabel Infantes/AFP/Getty Images
A protest at Parliament Square. Photo: Robin Pope/NurPhoto via Getty Images
Police form a barrier between pro- and anti-Trump protestors along Whitehall, London. Photo: Tolga Akmen/AFP/Getty Images
People protest against Trump at Parliament Square. Photo: Robin Pope/NurPhoto via Getty Images
Labour Party leader Jeremy Corbyn speaking on stage at an anti-Trump protest in Whitehall, London. Photo: Ben Birchall/PA Images via Getty Images
Anti-Trump demonstrators in Whitehall. Photo: Tolga Akmen/AFP/Getty Images
Climate activists and anti-Trump protesters in central London. Photo: Isabel Infantes/AFP/Getty Images
Demonstrators with placards in Whitehall. Photo: Tolga Akmen/AFP/Getty Images
A man sells Trump toilet paper in Parliament Square. Photo: David Mirzoeff/PA Images via Getty Images
Anti-Trump demonstrators in Trafalgar Square. Photo: Jacob King/PA Images via Getty Images
A demonstrator in Trafalgar Square. Photo: Isabel Infantes/AFP/Getty Images
A member of the Baby Trump Balloon team blows up a balloon in Parliament Square, London. Photo: David Mirzoeff/PA Images via Getty Images
Political artist Kaya Mar holds up a work depicting Trump outside the Houses of Parliament. Photo: Tolga Akmen/AFP/Getty Images
A smaller scale protest takes place as Trump attends a state banquet at Buckingham Palace Monday. Photo: Angeles Rodenas/SOPA Images/LightRocket via Getty Images
Protesters near Buckingham Palace on Monday. Photo: John Keeble/Getty Images

Go deeper: In photos: Trump's U.K. state visit

What's next

New York Times endorses Elizabeth Warren and Amy Klobuchar for president

Democratic presidential candidates Sens. Elizabeth Warrenand Sen. Amy Klobuchar at the December 2020 debatein Los Angeles. Photo: Justin Sullivan/Getty Images

The New York Times editorial board has endorsed Sens. Elizabeth Warren and Amy Klobuchar for president, in a decision announced on national television Sunday night.

Why it matters: The board writes in its editorial that its decision to endorse two candidates is a major break with convention that's intended to address the "realist" and "radical" models being presented to voters by the 2020 Democratic field.

Go deeperArrow1 hour ago - Media

What's next in the impeachment witness battle

Sens. Susan Collins (R-Maine) and Lisa Murkowski (R-Alaska). Photo: Tom Williams/CQ-Roll Call, Inc via Getty Images

Senators will almost certainly get to vote on whether or not to call impeachment witnesses. The resolution laying out the rules of the trial, which will be presented Tuesday, is expected to mandate that senators can take up-or-down votes on calling for witnesses and documents.

Yes, but: Those votes won't come until the House impeachment managers and President Trump's defense team deliver their opening arguments and field Senators' questions.

Inside Trump's impeachment strategy: The national security card

White House counsel Pat Cipollone and acting Chief of Staff Mick Mulvaney. Photo: Jabin Botsford/The Washington Post via Getty Images

Trump officials say they feel especially bullish about one key argument against calling additional impeachment witnesses: It could compromise America's national security.

The big picture: People close to the president say their most compelling argument to persuade nervous Republican senators to vote against calling new witnesses is the claim that they're protecting national security.