Freedom of speech is ‘on the line’ in a pivotal Dakota Access Pipeline trial 

A pivotal trial over the embattled Dakota Access Pipeline opens today that could have grave consequences for protests in the US and the future of the environmental group Greenpeace.

Members of the Standing Rock Sioux and more than 500 other tribes protested the development of the pipeline alongside demonstrators who joined from across the US nearly a decade ago. Legal battles are still in motion, even after oil started flowing through the pipeline that runs from North Dakota to Illinois in 2017.

The company that operates Dakota Access, Energy…