For several hours, hundreds of San Antonians protested the Dakota Access Pipeline on Tuesday. The purpose was to show solidarity with people who are against the pipeline.

One protest in Dallas could shut down the entire project.

“We stand with Standing Rock” became the rallying cry for those supporting the Sioux Tribe fighting over a thousand miles away at a reservation in North Dakota to prevent the completion of a crude oil pipeline that would run right through the tribe’s sacred land.

Many Native Americans participated in the San Antonio protest.

“Even though this doesn’t belong to America, it’s a sovereign nation, Bank of America and other subsidiaries have decided that they’re going to build a pipeline through it anyway,” protester Carla Chaffer said.

The nearly 1,200-mile pipeline would carry crude oil across four states to Illinois. Protesters say that the pipeline would contaminate the water, creating a situation worse than Flint, Michigan for everyone downstream.

“We have to speak up for all our neighbors, okay, because you don’t know when it will come and affect us,” protester Alva Rominger said.

The pipeline is owned by Texas oil company Energy Transfer Partners, which is based in Dallas.

The protesters in Dallas at the offices of the Army Corps of Engineers, asking them to strip the construction crews of their permits so that they can’t continue progress on the pipeline.

Most of the protesters that KENS 5 talked to said that they learned about the demonstration on Facebook. It was peaceful, while protests in North Dakota have featured clashes between protesters and police.