A makeshift garden planted at the heart of Occupy Oakland. The sign reads, "Food security not hedge funds."

A good portion of Oakland was closed to traffic all day on Wednesday.

A food activist holds a protest sign.

The food justice teach-in.

Paul Towers of Pesticide Action Network shows off his sign, which depicts the six major pesticide companies.

Students and recent students were out in full force.

Another environmental message.

Twilight Greenaway

Antonio Roman-Alcalá holds a sign that reads, "Fair food now!"

A woman on stilts wielding a giant wrench. Her sign reads: "Occupy your daily choices."

Protesters march and occupy shipping containers.

Protesters on a shipping structure.

This woman's sign appeared to give her a lot of opportunity to explain wage stagnation and taxation.

Activists blocking one of the port entrances.