Demonstrators demanding a ceasefire in Gaza shut down bridges in San Francisco and Boston, causing traffic disruptions and arrests. The protests coincided with a global trade summit involving President Joseph Biden. In San Francisco, 80 protesters were arrested and 29 vehicles were towed after blocking all lanes on the San Francisco-Oakland Bay Bridge. In Boston, about 100 protesters stopped traffic on a bridge connecting the city to Cambridge. Demonstrations over the war are becoming more disruptive across the US.