Sixteen-year-old Swedish climate activist Greta Thunberg joined the global protests from South Dakota, where she led a march in downtown Rapid City.

Greta Thunberg: “We’re standing up right now, and we will not back down, because we know what is at stake, and we will never give up.”

Over the weekend, Greta Thunberg met with young climate activists on South Dakota’s Pine Ridge Reservation. Today she’ll visit the Standing Rock Sioux Reservation, where indigenous-led protests in 2016 forced President Obama to halt construction of the Dakota Access pipeline, before President Trump greenlighted completion of the project as one of his first acts in office.