Rules are made for people to follow, however, not to break them. When people cross roads, they might be in a rush for an appointment, so they neglect the rule of crossing the road when green light, as the picture is shown. From this picture we could also see that a horde of people are going across the road. Th disadvantage for these points is that the car would not expect the people walking across the street while red light, and may even cause a big disaster. Additionally, if a disaster really happens, a lad of people would be affected.
So, from this picture we could learn that we must spot the right light to cross the road, and do not follow the ones who lead themselves to danger.