Democrats voiced their support for 2018’s March for Science on Friday, suggesting thousands gathering at the second annual event vote “climate change deniers” out of office.

“For the love of science, get out there and march! Then, VOTE these ignorant climate change-deniers out of office,” the Democratic Congressional Campaign Committee posted on Twitter, featuring a video of President Trump, Vice President Pence and Environmental Protection Agency (EPA) Administrator Scott Pruitt expressing doubts about global warming and clean energy advancement.

While not an explicitly political protest, the March for Science, now in its second year, last year targeted the environmental policies of the Trump administration, including cuts to federal research grants and large-scale deregulation by the EPA.The march, held in Washington, D.C., on Saturday with satellite events in various other cities, promoted a petition to “send a message to Congress and the White House that you support qualified scientific leadership.”

Colorful signs again dominated the rallies this year. Some protesters wore lab coats and others held signs that read “Send a scientist to the state house” and “Science not Silence,” an unofficial slogan of the protests.

One marcher’s sign warned that “at the start of every disaster movie there’s a scientist being ignored.”