Climate protests go virtual on Earth Day, but still have a voice. Signs showing world leaders were held up as demonstrators spoke during a climate change protest near the White House on Wednesday.Credit...Kevin Lamarque/Reuters April 22, 2021Updated 2:40 p.m. ET Like so many other things over the past year, much of the activism around Earth Day 2021 is virtual, unfolding as a livestream celebration at Earthday.org. On Wednesday, groups of activists came to Washington, including 350.org, US Youth Climate Strike and Build Back Fossil Free. They brought portable versions of “climate clocks.” These devices, some of them enormous, count down, by some measures, the time left to avoid the worst effects of climate change.