I am not huge into the lizard races but Icke is only saying something many different people, tales, and legends have said. Some people (I kid you not) believe they descended from something greater and that gives them literally a "divine right" (as if from heaven) to rule over people. I'm not huge into that stuff but a few people do literally believe they are sons of heaven and as such, are justified in killing, dominating and oppressing everyone else (since they are lesser people).