Tran Thi Nga and three others are reported to be arrested in a crackdown on dissent.
Violent clashes mark attempts to memorialize a 1974 island grab by China that cost the lives of 75 Vietnamese.
Dang Xuan Dieu was released from prison, as authorities stopped Pham Thanh Nghien at the border with Cambodia.
The human smuggling arrests come as Hanoi says human trafficking jumped in 2016.
The Formosa steel mill disaster devastated the country's central coast, killing hundreds of tons of fish and sparking protests, lawsuits, and arrests.
Shrimp paste and paint are smeared on Tran Thu Nam's home.
A coroner’s report says that Pham Dang Toan died because he ran, not because police beat him.
An expansion of the ‘Magnitsky’ act gives Washington a new legal tool.