LONDON — Former Vice President Kamala Harris’ trip to the British capital as part of the tour for her new book, “107 Days,” detailing her failed 2024 presidential campaign, got off to a tense start Thursday as three protesters interrupted the event within minutes of it starting, calling her out over the Biden administration’s role in Israel’s war in Gaza.

“Harris you have blood on your hands,” read a sign from one of the protesters who were all escorted out of the Royal Festival Hall at London’s Southbank Centre by security.

Harris responded to the uneasy moment by conceding that the Biden administration could have done more to address the humanitarian crisis in the Palestinian enclave amid Israel’s offensive.

“I believe that we had certain levers that we did not exercise,” she said. “I believe we should have made public statements about what was happening, in particular around the inhuman nature of what was happening in Gaza.”

But later in her discussion with novelist Chimamanda Ngozi Adichie, Harris made clear that as vice president she did not have the “final say” on the administration’s policies, including on the Middle East, noting that she would have done things differently had she been in charge.