The City's homeless people are lucky

I don't mean lucky to be homeless, come on think more positive.  Recently I’ve been seeing several homeless people walk down the sidewalks of San Francisco's Financial District on Market Street and south of 6th, then suddenly they jump off the curb directly into speeding traffic.  I don’t know how the person makes it across without being hit by a bus, trolley, car or taxi, lucky I guess.  Of course this is after car and bus horns blare loudly, tires screech to an abrupt halt and much profanity is directed at the pedestrian violator.  I would imagine that if I were a passenger in the car or bus I would hear under the drivers breath,"Watch where you're walking you dumb bast.....".  After getting across safely the violator normally turns back and flips everyone the bird like they did something wrong.  One time I witnessed a homeless person beat on the hood of car. They are lucky again that the driver didn’t shoot them out of fear for his life.  The homeless have this innate sense of being owed something from society but I haven't quite figured it out what we owe.  I wonder if any of the 52% of pedestrian traffic fatalities reported for San Francisco are the homeless individuals that on a daily bases dare San Francisco drivers?