Thousands of protesters campaigning against corporate greed have closed one of the busiest ports in the US. Officials at the Oakland port in California said operations had been "effectively shut down" because of the demonstration by around 5,000 people. The city has been catapulted to the forefront of national anti-Wall Street protests after a former Marine was bady wounded during a march and rally last week. On Wednesday, protesters streamed across a freeway overpass to gather in front of the gates to the port, which handles around \$39bn a year in imports and exports. They stood on tractor-trailers in the middle of the street and climbed scaffolding nearby. Groups were shown on local TV running through the streets and trying to start small fires. Student Sarah Daniel, 28, said: "The reason I'm here is I'm sick and tired of trying to figure out where I should put my vote between the lesser of two evils." The atmosphere turned tense after a protester was apparently struck by a car and rumours spread the person had died. Acting Oakland Police Chief Howard Jordan later said the pedestrian was taken to a local hospital to be treated for non-life-threatening injuries. Anti-Wall Street activists are angry at the financial system and have focused on trying to disrupt banks and other symbols of corporate America. The Occupy protest movement has spread from New York across the world, as seen at the Capitalism in Crisis demonstration that has taken root outside St Paul's in London. Former Marine Scott Olsen was seriously wounded during a clash with police on October 25 and is still recovering in hospital. Protesters say the 24-year-old was struck by a tear gas canister fired by police. An investigation has been launched into the incident. Meanwhile, at the original Wall Street protest in New York, Mayor Michael Bloomberg said it was "really hurting small businesses and families" and warned he could take action. In Seattle, around 300 people blocked the street outside a hotel where Jamie Dimon, chief executive of the biggest US bank JPMorgan Chase & Co, was speaking. Earlier in the day, five protesters were arrested for trespassing after chaining themselves to fixtures inside a Chase bank branch, Seattle police said. In Los Angeles, several hundred protesters marched in solidarity with their Oakland counterparts. from Vanessa The Google Girl. my skype name is rainbowstar123