I see many comments about how some wonder how citizens of these areas can stand living in the area. If you watch the video, so many people walking by are just immune to the behavior. Until it directly affects them, they don't care. Some wanted to get the incident caught on video. A few people had to adjust their path to keep walking. However one person either got hit or almost got hit at the :46 second mark.
I went to S. California this past fall, visiting Palm Springs and a few days in the LA area. The LA area wasn't all that bad, no different from smaller Midwest cities. Just more people, thus more suburban sprawl and traffic. Traffic actually was never an issue for us. There actually was less blight (run down homes, factories, etc.) it seemed in the greater LA area than in most Midwestern cities. Likely because LA has always been a draw and with money comes the means to knock down trash properties and build new. I'm sure there were some rough areas I never got close to, but overall, the metro area didn't seem as dirty as some people portray it. Yes there were areas of parked RVs, tent cities, etc., but I see that in every major metro area now.
What this tells me is that things will have to get a lot worse before we'd ever see any significant movement away from any specific area. I'm talking things like homicides going up by a factor of 10, maybe even higher before people start get scared away. Or 75% of the retail, both goods and food, close up shop, and people leave because just having the beach and mountains for something to do isn't enough.
I looked up the homicides of the LA area vs my area. If the population were equal, my area would have around 4x the amount of homicides vs with LA County sees.