 UC Santa Cruz is also well known for its cannabis culture. On April 20, 2007, approximately 2,000 UCSC students gathered at Porter Meadow to celebrate the annual "420". Students and others openly smoked marijuana while campus police stood by. The once student-only event has grown since the city of Santa Cruz passed Measure K in 2006, an ordinance making marijuana use a low-priority crime for police. The 2007 event attracted a total of 5,000 participants. The university does not condone the gathering, but has taken steps to regulate the event and ensure security for all participants. On April 20, 2010, the school administration shut down the west entrance to campus and limited the amount of buses that could drive through campus.
