Tens of thousands of pro-democracy protesters extended a blockade of Hong Kong streets on Tuesday, stockpiling supplies and erecting makeshift barricades ahead of what some fear may be a push by police to clear the roads before Chinese National Day.

Riot police shot pepper spray and tear gas at protesters at the weekend, but by Tuesday evening they had almost completely withdrawn from the downtown Admiralty district except for an area around the government headquarters.
— Reuters/Yahoo News

You can see more photos of the peaceful demonstrations searching for the tag umbrellarevolution and occupycentral.