william nguyen is a second-generation vietnamese american.e was visiting before graduating from the university of singapore next month. his sister says their family has not been able to speak with him since he was arrested ten days ago. this is one of the last times william nguyen was seen in public. video shows his bloodied face as police drag him through a kroutd -- crowd of protesters in ohio ch -- ho chi minh city. >> he's very interested in the development of vietnamese society. >> reporter: nguyen was one of thousands of people protesting a controversial proposed law that would allow long-term land leases to china. according to the state-run vietnam news agency, he's accused of disturbing public order and was reportedly one of hundreds of people detained. in a taped video confession, nguyen appears to say, i understand that my acts violated the law. i regret that i caused trouble for people heading to the airport. communist vietnam has a history of both forced confessions and suppressing free speech. they are now on capitol hill fightin