President Barack Obama added one more flower early Monday to a memorial in Paris for the victims of the Nov. 13 terrorist attacks.
The brief visit to the memorial, which is outside the concert hall where 89 people were massacred, was Obama's first stop during his first visit to France since the attacks two weeks ago.
Joined by French President Francois Hollande, Obama placed a single white flower on the memorial, then bowed his head and put his arms around Hollande. Afterward, he walked away slowly and quietly.
The solemn visit came as more than 140 world leaders converged on Paris for the COP21 climate summit — and as some climate change activists defied warnings from French authorities about assembling while a post-terrorist attack state of emergency remained in place.
Related: Global Climate March: Clashes in Paris as Protesters Rally Ahead of COP21
On Sunday, thousands formed a human chain, and about 200 protesters — some wearing gas masks — clashed with police near the Place de la Republique, where thousands of shoes had been arranged to symbolize the ban on large gatherings. Interior Minister Bernard Cazeneuve said that 174 people had been jailed and that two dozen others had been placed on house arrest.
The protest was one of thousands planned for the Global Climate March, billed as one of the largest global warming protests ever. One organizer estimated that 570,000 people in 175 countries participated.