Opposition to the Dakota Access Pipeline is gaining national attention.
Monday night, Leonardo DiCaprio tweeted and Instagramed to followers: "3 million gallons of oil are spilled in the USA annually. No #DakotaAccess."
The Oscar winning actor urged fans to learn more and take action.
In seven days, over 60,000 people have signed the petition on change.org.
Last week, stars of the upcoming Justice League film posted videos and photos to their social media accounts in support of the Standing Rock Reservation as well.
The Dakota Access Pipeline is proposed be the largest capacity pipeline to date and go underneath the community's main water source. Residents are afraid their drinking water will be contaminated.
Tribal leaders say federal laws and treaties were bypassed in the planning process requiring direct discussion with the tribe. They also say the environmental assessment of the site was done by the same company building the pipeline and makes no mention of a Native American community living in the area.
Energy Transfer Partners is constructing the pipeline. They maintain they are compliant with regulations and tribal coordination.
The Army Corps of Engineers is set to make a decision on the final permit of the pipeline this month.