Organisers had previously said they'd need about 10,000 supporters to shut down Hong Kong's financial district. Tens of thsouands of protesters filled the streets in late September and early October, paralysing not just Central but also parts of Causeway Bay, Admiralty and Mong Kok. 

In the early hours of the protest, police fired teargas into the crowds more than 80 times, according to a senior officer. However, this only spurred on more Hongkongers to take to the streets after widespread outrage at the use of heavy-handed tactics. 

As the demonstrations continued, police softened their approach, only stepping in when Occupy Central and students groups demanded they protect them from violent anti-Occupy protesters who attacked rallies in Mong Kok and Causeway Bay.