The University of California at Santa Cruz is asking parents of students to talk to their children about why they shouldn't participate in 4/20, an unofficial but popular pot-smoking event held each year at the university on April 20. The Santa Cruz Sentinel  reported that Felicia McGinty, vice chancellor of student affairs, sent an e-mail to the parents of freshmen saying: "I encourage you to talk with your student about his or her plans for 4/20. Ask direct questions about the choices they make and express your expectations regarding marijuana, alcohol or other drug use. Although students may not initiate discussion on this topic, your opinions and expectations can influence their behavior." Santa Cruz is also taking additional steps to combat the party. Overnight guests are being banned and bus service will be limited. The university has tried to discourage the event previously, but these YouTube videos suggest the limited effectiveness of the past crackdowns in 2008  and 2007.