There are a couple of ways to approach a crosswalk in Sacramento's inner city: With trepidation, resignation or fearlessness. The last is probably the best, but it's also dangerous. You step into a downtown/Midtown street and your life is in your hands. Rather, in someone else's hands: Those hands gripping the steering wheels of the cars bearing down on you. And while you can claim all day long that pedestrians have the right of way in California - especially in a marked crosswalk - you don't want to be declaring said truth from a hospital bed. Fortunately, you have allies, and they're a little bit crafty: The Sacramento Police Department will be conducting an undercover operation aimed