Hong Kong has its own legal system, with rights such as freedom of assembly and free speech protected
Hong Kong saw prolonged street protests after Beijing ruled out open nominations for the election of Hong Kong's leader in 2017. The BBC takes a look at the controversy.
What is Hong Kong's relationship with China?
Hong Kong, a former British colony, was handed back to China in 1997 following a 1984
agreement between China and Britain.
China agreed to govern Hong Kong under the principle of "one country, two systems", where the city would enjoy "a high degree of autonomy, except in foreign and defence affairs" for 50 years.
As a result, Hong Kong has its own legal system, and rights including freedom of assembly and free speech are protected.
Its leader, the chief executive, is currently elected by a 1,200-member election committee. A majority of the representatives are viewed as pro-Beijing.
Hong Kong's mini-constitution,
the Basic Law, says that "the ultimate aim" is to elect the chief executive "by universal suffrage".
The Chinese government has promised direct elections for chief executive by 2017.
This committee would be formed "in accordance with" Hong Kong's largely pro-Beijing election committee. Any candidate would have to secure the support of more than 50% of the nominating committee before being able to run in the election.
Democracy activists believe China will use the committee to screen out candidates it disapproves of.
Occupy Central is one of several pro-democracy groups pushing for electoral reform in Hong Kong
Who is leading the debate?
Two main groups of pro-democracy activists have emerged.
One is
Occupy Central, led by academic Benny Tai, while the other comprises student groups such as the Hong Kong Federation of Students and Scholarism.
Occupy Central organised an unofficial referendum on political reform in June 2014. About one in five Hong Kong residents turned out for it.
Shortly after the vote, tens of thousands of protesters took part in what observers say was Hong Kong's largest pro-democracy rally in a decade on 1 July, which marked the day Hong Kong was returned to China in 1997.
Since then, the student groups have become a key player as well.
In late September they led a week of class boycotts, which later grew into full-scale city-wide protests when Occupy Central decided to join in.
Notable student activists include Alex Chow and Lester Shum from the Hong Kong Federation of Students, and Joshua Wong of Scholarism.
The students later threatened to escalate the street protests by occupying government buildings if chief executive CY Leung did not resign. This prompted an offer of talks with high-level Hong Kong government officials, which the students accepted.
A rally by pro-Beijing groups on 17 August drew thousands
Does everyone want full democracy?
They argue that continued civil disobedience and opposition to Beijing would only damage the city's reputation and economy, as well as its relationship with China.
These groups have organised several protests against Occupy Central and the pro-democracy movement. Its biggest event, held on 17 August, was attended by thousands.
The rally was unusual as large-scale pro-government protests are rare in Hong Kong. Several questioned its legitimacy, especially when reports emerged that some marchers were paid to attend.
Business leaders, who favour stability, have also opposed pro-democracy protests, and a recent survey by Hong Kong University showed more Hong Kong residents viewed China positively than negatively.
Pro-China legislators have
argued that Beijing's proposals are an improvement on the current system.
During the Hong Kong pro-democracy protests in September and October 2014, several groups turned up at protest sites to oppose their occupation of major streets. Police arrested a number involved with scuffles with pro-democracy protesters, and said that among those arrested were people with links to triad gangs.
China has denounced the street protests that took place in early October as "illegal"
What does China say?
China has consistently denounced pro-democracy protests taking place in Hong Kong, and has called the latest street occupations in September and October 2014 "illegal".
Li Fei, the deputy secretary general of the National People's Congress Standing Committee, said that openly nominating candidates would create a "chaotic society" and that any chief executive must "love the country".
In a
June 2014 white paper, China said some had a "confused and lopsided" understanding of the "one country, two systems" model.
China has constantly stressed that unity is the way forward for the country, as it grapples with demands for greater autonomy in Xinjiang and Tibet.
The current chief executive of Hong Kong is Leung Chun-ying
What is the Hong Kong government's stand?
Chief Executive CY Leung hailed Beijing's decision on election candidacy as a "major step forward in the development of Hong Kong's society".
His government had said June's unofficial referendum had no legal standing.
It also welcomed the Chinese government's white paper, saying that Hong Kong has benefited from the "one country, two systems" model.
In a report submitted to Beijing in July, Mr Leung said that mainstream Hong Kong society agreed with Beijing on how electoral reform should proceed.
The report was based on public consultation with the Hong Kong public. But it drew fire from pro-democracy activists who said Mr Leung had misrepresented public opinion.
The government must still discuss Beijing's election ruling and formulate a bill to be passed by Hong Kong's legislature.
China has for years been hit by severe air pollution
Runner Chas Pope has posted pictures on the internet of his mask before and after the marathon
Ethiopia's Girmay Birhanu Gebru won the marathon in just over two hours and 10 minutes
Organisers rejected calls to postpone the race despite the haze
Most runners defied the smog to enjoy the race
