In this photo by Ahn Young-joon, Rep. Choi Won-sik of the opposition People's Party, speaks at the National Assembly in Seoul, South Korea. Opposition lawmakers have delivered nonstop speeches for seven straight days to block a vote on a government-backed anti-terrorism bill that they say would threaten personal freedoms and privacy if passed into law. The filibuster is the country's first since 1969 and is already one of the longest in history. To succeed in blocking the vote, the lawmakers would need to continue their speeches until midnight of March 10, when the current parliamentary session is scheduled to end. President Park Geun-hye and her party have endorsed the bill granting greater power to the National Intelligence Service, Seoul's main spy agency, to investigate individuals and groups. Opposition lawmakers say the bill doesn't have sufficient measures to prevent the agency from abusing its powers.