You are driving through an intersection with a green signal. A pedestrian starts to cross your path against a red signal. What should you do FIRST?

If you have a green light and a pedestrian is violating the rules of the road by crossing against a red light, warn the pedestrian by sounding your horn. Of course, you must do everything possible to avoid hitting the pedestrian. If the pedestrian still doesn't stop even after you sound your horn, you must stop for the pedestrian.