On his microblog, Dong said strangers raided his office in late August and took away three computers without providing any legal document. "What crime will they bring against me? Prostituting, gambling, using and selling drugs, evading tax, causing trouble on purpose, fabricating rumors, running a mafia online?" Dong wrote, listing possible offenses.
Dong is best known for pushing for thorough investigations of a suspicious death of a young man in a detention center in 2009. Authorities initially said it was accidental but later admitted the man was beaten to death.
Most recently, Dong raised safety and environmental concerns about an oil refinery project near the city of Kunming.