more than one light wiring part 2

Sam Maltese shows how to wire a light when the power feed is located at the light fixture box instead of the switch box. Also shows how to connect more than one light to the same switch. Since this video has been posted, the code has changed. It is now required to use a 3 conductor wire going to the switch from the light. The power would be sent down on the black and returned back to the light on the red conductor. The white of the three conductor is connect to the identified conductor at the light and sent to the switch box and if not used is capped. Code now requires there be a identified conductor at any switch that controls a light. This code was created because people were adding circuits from exist light switch box like this one in the video. And since there was no identified conductor at switch box, they were using the bond wire as an alternative to the white. This makes the bond wire unsafe, because it now carries current. Now having a identified conductor at box allows circuit like a receptacle to be added safely.