People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. The Vietnam Police force was founded on August 19, 1945, the day of the anti-colonial people's uprising known as the August Revolution. (Photo by Reuters/Kham)

People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Vietnam's Public Security (Police) Minister General Tran Dai Quang speaks during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

A man waves a communist flag during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

A commune policeman (C) demonstrates an Israeli-made CornerShot rifle during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Laotian police officers (in green uniforms) look at Vietnamese-made weapons on display during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

A policewoman demonstrates a Vietnamese-made pistol during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

A policewoman demonstrates a Vietnamese-made pistol during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Police lieutenant Truong Thi Thu Hien from Ha Tinh province speaks during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Police generals attend the celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Lieutenant General Le Thanh, former deputy head of Police Department, speaks at the celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Police officers attend the celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

Vietnam's Public Security (Police) Minister General Tran Dai Quang (L) salutes as President Truong Tan Sang presents Golden Star medals on a police flag during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)

People perform during celebrations to commemorate the 70th anniversary of the establishment of the Vietnam Public Security police force at the National Convention Center in Hanoi August 18, 2015. (Photo by Reuters/Kham)