Already the attention on Standing Rock has had ripple effects for tribal nations states away, said Marlena “MT” Garcia, another march organizer.

“Because of the unity and solidarity that has come with Standing Rock it has woken up a lot of people ... it will bring acknowledgement to issues that are happening and that we have the power to stand up to and make it stop,” said Garcia, who is Navajo.

The Hopi, Navajo and Havasupai tribes have sent official letters expressing solidarity with the Standing Rock Sioux tribe as well.

The Navajo Nation issued a letter of support and also sent money to help provide water and necessities for those in the camp, said Mihio Manus, spokesman for the office of the president and vice president.

President Russell Begaye and Vice President Jonathan Nez visited the camp two weeks ago while in the area for other meetings and took a Navajo flag to display there, Manus said.

In an Aug. 25 letter, Hopi Tribal Chairman Herman Honanie noted that the protests are continuing indigenous peoples’ centuries-long fight to protect their children and homelands.

In its own letter, the Havasupai Tribal Council referenced the tribe’s struggles to preserve its water sources in the Grand Canyon.