I agree with oboeterry. The OP exaggerated too much. The earthquake was moderate (5.4 - 5.8), so there was 0 to little damage. The videos the OP also proof there was not much damage, just a bit of shaking (I didn't see the building crumbling, just a few stuffs falling down. If it was a 7.8 like the one in China, then it would be different. I also believe structures in CA are better built than in China.