Hong Kong protesters face crucial weekend test after airport setback

Hong Kong's pro-democracy movement faces a major test this weekend as it tries to muster another huge crowd following criticism over a recent violent airport protest and as concerns mount over Beijing's next move.

Ten weeks of protests have plunged the international finance hub into crisis with the communist mainland taking an increasingly hardline tone, including labelling the more violent protester actions "terrorist-like".

Chinese state media have put out images of military personnel and armoured personnel carriers across the border in Shenzhen, while the United States has warned Beijing against sending in troops, a move many analysts say would be a reputational and economic disaster for China.

The nationalistic Global Times newspaper said there would not be a repeat of the Tiananmen Square crackdown, in which hundreds -- or even thousands -- are believed to have been killed, if Beijing moves to quash the protests.

"The incident in Hong Kong won't be a repeat of the June 4th political incident in 1989," it said, insisting the country now had more sophisticated approaches.

It was a rare reference to the bloody events, which are taboo in China.

Hong Kong's protests were sparked by opposition to a plan to allow extraditions to the mainland, but have since morphed into a wider call for democratic rights in the semi-autonomous city.

Millions of people have hit the streets while clashes have broken out between police and small groups of hardcore protesters for ten consecutive weekends.

For most of that time, US President Donald Trump has taken a hands-off approach to the unrest but began speaking up this week, suggesting any potential trade deal with Beijing could be upended by a violent response from the mainland.

Speaking on Thursday, Trump urged Chinese counterpart Xi Jinping to meet protesters and solve the crisis "humanely".

If Xi sat down with the protesters, Trump said, "I'll bet he'd work it out in 15 minutes."