Secondly there is absolutely no connection between your allegations and Afghans. Anybody could have been responsible for what is admitted in your provided source as suspected rather than proved.
Third, as already mentioned and disregarded by OP in favor of obfuscation, Betz is a tribal name with a then decided interest in stoking anti Muslim hatred to draw attention away from the tribal genocide currently being promulgated by fellow tribesmen. You are either a member of the tribe committing further evil or an unwitting victim of tribal propaganda. Some serious soul searching is in order for you in either case. Best of luck in that endeavor.