For organizers, the demonstrations offered a chance to assess the progress and setbacks since the first People’s Climate March in New York City in 2014. That march, organized by many of the same groups to urge international leaders to take collective action, predated both the Paris accord and many of Mr. Obama’s most ambitious actions.
Two and a half years later, organizers said their movement had grown considerably more diverse. They said they were focused on building a political coalition capable of countering Mr. Trump and advancing liberal policies at all levels of government. A daylong training workshop for those contemplating running for office was planned for Sunday.
Saturday’s march came a week after thousands of scientists and their supporters gathered here to respond to what they called threats against their enterprise by the administration. Another march, for immigrant and worker rights, was scheduled for Monday.
Cindy Wiesner, the national coordinator for the Grassroots Global Justice Alliance, a coalition of liberal organizing groups, said leaders of the movement hoped to capture that energy.
“I think there’s a lot more clarity about the stakes for all of our communities,” she said.
