No reason specified for pardons, but they come just days after a sweeping election victory by Hun Sen's ruling Cambodian People's Party was officially certified.
Tep Vanny, 38, received an award for leadership in 2013 for her campaigning on behalf of the Boeung Kak families.
Suy Sophan, who controls the Phan Imex company that owns the land where the community lives, was accused of releasing the dogs who reportedly attacked at least one woman.
So, the book argues that it is necessary to step behind this facade and understand how everyday Cambodians and people understand what's going on in this juridical process.
“It is villagers’ rights to go to vote or not vote,” said one woman describing pressure from ruling party officials to vote.
The CPP jailed Sokha in September on treason charges and banned the CNRP over allegations of a conspiracy to overthrow Hun Sen by force.
Wenguang Sun, who is critical of China's human rights record, has not been heard from since the Wednesday evening show.
The U.S. was joined in its condemnation of the election process by several governments, political figures and rights groups.
The Cambodian government has ordered internet service providers (ISPs) to block the websites of 15 news websites of independent outlets including Voice of America for two days before and during the country’s election.
Reuters could not open the websites of Radio Free Asia Khmer, Voice of America Khmer and Voice of Democracy on Friday.
The criticism came after Rhona Smith questioned the targeting of election boycott campaigners by the Cambodian authorities.
The Center for Strategic and International Studies report found that the Cambodian courts were the main tool used by the authorities to clamp down on civil society groups the authorities saw as challenging.