OAKLAND, Calif. -- More than 1,000 Occupy Wall Street protesters blocked cargo trucks at some of the West Coast's busiest ports Monday, forcing terminals in Oakland, Calif., Portland, Ore., and Longview, Wash., to halt operations.

While the protests attracted fewer people than the 10,000 who came Nov. 2 to shut down Oakland's port, organizers declared victory and promised more demonstrations to come.

"The truckers are still here, but there's nobody here to unload their stuff," protest organizer Boots Riley said. "We shut down the Port of Oakland for the daytime shift, and we're coming back in the evening. Mission accomplished."

Organizers called for the "Shutdown Wall Street on the Waterfront" protests, hoping the day of demonstrations would cut into the profits of the corporations that run the docks and send a message that their movement is not over.

The closures' economic impact wasn't immediately clear.

The longshoremen's union did not officially support the protests, but its membership cited a provision in its contract that allows workers to ask to stay off the job if they feel the conditions are unsafe. Some went home with several hours pay, while others left with nothing.

Oakland Longshoreman DeAndre Whitten was OK with it. "I hope they keep it up," said Whitten, who lost about $500. "I have no problem with it. But my wife wasn't happy about it."

Others, such as the truck drivers who had to wait in long lines as protesters blocked gates, were angry, saying the demonstrators were harming the people they were trying to help.

"This is joke. What are they protesting?" said Christian Vega, who sat in his truck carrying a load of recycled paper. He said the delay was costing him $600. "It only hurts me and the other drivers."

From Long Beach, Calif., to Anchorage, Alaska, to Vancouver, protesters beat drums and carried signs as they marched outside the gates. There were a handful of arrests but no major clashes with police.