On 9 December, 234 out of 300 MPs (1 did not attend) voted in favour of the impeachment of Park. The same day, a photo was taken, where Woo raised his right hand in greeting to someone. The photo has later become a viral on the Internet as the "someone" was a bereaved family member to a victim of the MV Sewol tragedy. On 10 March 2017, the Constitutional Court upheld the impeachment in a unanimous 8–0 decision.