David Icke started talking about the "Lizard People". After doing more research, he was able to give a better description about what they are and how they operate.
From what I have learned, they are called Archons, or Gjinn. David says they exist in the frequency range just below human sight. This would be the Infrared range. He also says that they connect to people through their low frequency ranges. They cannot connect to us when we are in a high frequency mode. What I am talking about is emotion.
Just like the color spectrum, emotion has it's own frequency range. http://www.innertranquillity.com.au/human-emotions-vibrational-frequency-ranges
There are also others who can give a description of them and how they operate. Robert Stanley, John Lash, Rosemary Guiley