The Women's March on Washington attracted protestors of all ages, including many who had demonstrated in the past.

The "mother of all marches" – the Women's March on Washington – attracted an estimated 725,000 demonstrators from across the country and the globe.

During the 2016 presidential campaign, thousands of people gathered at Standing Rock, North Dakota, for a sustained encampment to protest the Dakota Access Pipeline, which demonstrators said would damage the environment, water supply and sites of cultural significance to the Standing Rock Sioux tribe. In December, the Army Corps of Engineers said it would consider alternative routes. But Trump said he would allow the pipeline to be built once he took office.