We're not bad people. That figure includes Burglary, Robbery, Grand Theft, Sexual Assault, and other violent crimes. O.K., I.V. has some crime. But I see cops everywhere. On weekends, when outsiders come to party, the population can explode to 30,000 or 40,000.
More problems mean more law enforcement presence.
Drinking in a private home or apartment, or even in a bar, puts you in a somewhat controlled and safer environment. People who are drinking are less likely to have a violent confrontation indoors with their friends than outdoors with strangers on the street. If you are drinking or drunk on the street, your chances of getting into a violent situation with someone you don't know are much higher. Likewise, violent sexual assaults are more likely to occur on a darkened street than at a house party. Historically, loud music and party noise have been the leading cause of combat between neighbors in Isla Vista late at night.