The political prisoners staged hunger strikes against poor conditions and refused to sign confessions that might have shortened their sentences.
He says the threat of jail won’t dissuade him from his activism.
The Southeast Asian country aims to protect the competitiveness of its exports.
Pastor Duong Kim Khai served a five-year sentence for 'attempting to overthrow the government.'
The eviction in April had provoked a clash with police that resulted in arrests and injuries on both sides.
They had been arrested in 2011 on charges of attempting to overthrow the government.