What followed in the next ten months was a response from Sioux communities, protestors and environmentalist groups in the form of peaceful protests in which over 400 arrests were made by local law enforcement. 26 Environmentalist groups responded to the event with an open letter condemning the actions of the North American banks who helped fund the pipeline, and encouraged them to stop any future payments contributing to it.
In the next ten months, Sioux communities, protestors, and environmentalist groups took action through peaceful protests resulting in 400 arrests by local authorities. Twenty-six environmental organizations issued a letter criticizing the involvement of North American banks that supported the pipeline and urging them to cease any future financial contributions.