The document summarizes ongoing pro-democracy protests in Hong Kong between police and protesters. It includes over 20 pictures showing large crowds of protesters gathering outside government buildings, protesters using umbrellas and cling film to protect themselves from police pepper spray, and scenes of police firing tear gas into crowds. The pictures depict escalating clashes between protesters pushing for greater democracy and police trying to control the demonstrations.

1. Picture: REUTERS/Carlos Barria

2. Pro-Democracy Protesters and Riot Police Clash in Hong Kong

3. Picture: ANTHONY WALLACE/AFP/Getty Images

4. Thousands of protesters gather outside Hong Kong's government headquarters(Xaume Olleros/AFP)

5. Picture: XAUME OLLEROS/AFP/Getty Images

6. A police officer shouts during a demonstration outside the Hong Kong government headquarters(Anthony Kwan/Getty)

7. Demonstrators put their hands up as they face riot policemen(Xaume Olleros/AFP)

8. Picture: Paula Bronstein/Getty Images

9. A pro-democracy protester wears goggles wrapped in cling film to protect himself from pepper spray(Alex Ogle/AFP)

10. Police officers confront pro-democracy protesters in Hong Kong(Xaume Olleros/AFP)

11. Demonstrators use umbrellas to protect themselves from pepper spray(Bobby Yip/Reuters)

12. Picture: XAUME OLLEROS/AFP/Getty Images

13. Picture: REUTERS/Tyrone Siu

14. Picture: Paula Bronstein/Getty Images

16. Picture: EPA/DENNIS M. SABANGAN

19. Picture: REUTERS/Carlos Barria

20. A man holds a sign which read 'For democracy with peace' as protesters block a street near the government headquarters building in Hong Kong, September 30,
2014.
REUTERS/Carlos Barria

21. Police fire tear gas into a crowd of pro-democracy protesters near the Hong Kong government headquarters(Aaron Tam/AFP)

22. A protester is tended to after clashing with riot police outside Hong Kong government complex(Lam Yik Fei/Getty)

23. A cloud of tear gas hangs over protesters near the Hong Kong government headquarters(Anthony Kwan/Getty)

24. Police officers rest after a night of protests near the Hong Kong government headquarters(Dale de la Rey/AFP)

25. Police officers stand guard during clashes with pro-democracy protesters in Hong Kong(Xaume Olleros/AFP)

26. Picture: Lam Yik Fei/Bloomberg

27. Picture: XAUME OLLEROS/AFP/Getty Images

30. Picture: EPA/JEROME FAVRE

32. Picture: EPA/DENNIS M. SABANGAN

33. Picture: Alex Ogle/AFP/Getty Images

37. A poster with a drawing of an umbrella with the Chinese characters "peace" is displayed at a rally as protesters block the main road at Causeway Bay shopping
district in Hong Kong September 30, 2014.
REUTERS/Bobby Yip

38. An anti-government protester uses cling film in an effort to protect his eyes from the effects of tear gas(Anthony Kwan/Getty)

39. Picture: XAUME OLLEROS/AFP/Getty Images

40. Umbrellas used by protesters are seen at a site where they blocked the main road leading to the financial Central district in Hong Kong September 30, 2014.
REUTERS/Bobby Yip

41. Picture: Lam Yik Fei/Bloomberg

42. Protesters walk past an umbrella as they block the main road at Causeway Bay shopping district in Hong Kong September 30, 2014.
REUTERS/Bobby Yip

43. Picture: EPA/DENNIS M. SABANGAN

44. Picture: EPA/ALEX HOFFORD

45. Aman walks by a barricade of metal fence and umbrellas on a street at the central financial district, near the government headquarters in Hong Kong
September 30, 2014.
REUTERS/Carlos Barria

46. Students from various universities take part in a demonstration at the Chinese University in Hong Kong September 22, 2014.
REUTERS/Bobby Yip

47. Photo by Xaume Olleros/AFP/Getty Images
A couple sits down on a barricade during a demonstration outside the government headquarters in Hong Kong on Sept. 28, 2014.