Police stormed the campus after an all-night siege that included firing repeated barrages of tear gas and water cannons.
Government supporters took to the streets of downtown Hong Kong after a chaotic working week saw hardcore anti-Beijing activists cause widespread disruption in the city and stretch police resources.
A video circulating on social media showed a man giving flowers to Junius Ho and asking permission for a photo with him. The man then drew a knife from his bag and stabbed Ho in the chest but was quickly overpowered by the victim and several others.
Hong Kong police fired volleys of tear gas to disperse thousands of protesters, many wearing banned face masks, who had converged on the Kowloon harbour-front tourist district to denounce perceived police brutality over months of unrest.
Opponents said prohibiting flights would simply make it harder for Cuban-Americans to visit their families outside the capital, without making a significant impact on the Cuban government.
Anti-Beijing protesters plan to hold demonstrations on Thursday evening in support of Catalan protests, which re-started over jail sentences handed out to nine separatist leaders.
National Basketball Association Commissioner Adam Silver said the organisation will not apologise over a tweet from Houston Rockets general manager Daryl Morey expressing support for Hong Kong's protesters.
The warning comes as the international financial hub remained partly paralysed from three days of protests in which the city's rail network and business outlets seen as pro-China were vandalised.
A massive pro-democracy rally in downtown Hong Kong ended early after violence broke out, with police firing tear gas and a water cannon after protesters threw bricks and Molotov cocktails at government buildings.
Nepal has enjoyed a degree of political and economic stability over the last few years but a clash between a renegade party and the government could endanger the calm.
The Hong Kong protests started as a peaceful rebuke of the government in April but have evolved into a direct challenge to Chinese rule over this former British colony.
China's ambassador to the United Kingdom said Beijing would use its power to quell Hong Kong protests if the situation deteriorates further.
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