Women's March returns this weekend, with hundreds of events planned worldwide

Women and their allies will again take to the streets this weekend.

Organizers chose Nevada to host the main event this year because it "was rocked by the deadliest mass shooting in modern U.S. history, recent sexual assault allegations against elected officials and has become a battleground state that will shape the Senate in 2018," according to the Women's March website.

"History will remember the day that Donald Trump was sworn in as President," Warren said in a statement this week. "But history will also remember the day after – the day that women all across the country became an army. We demonstrated that we can be the loud, determined, unrelenting force that reminds all of America about our values — and our willingness to fight for those values. Power to the Polls is about fighting back, and I'm honored to be a part of this campaign."

There are also anniversary marches and events planned in dozens of cities abroad, including Buenos Aires, Kampala, London, Bangkok, Beijing and Sydney.

ABC News' Adam Kelsey contributed to this report.