http://www.exopolitics.org/Report-ET-Motivations.htm
It's quite long, but very shocking
some excerpts:
According to Col Corso, the Grays were involved in agreements with the Eisenhower administration that military officials saw as a form of ‘negotiated surrender’, where the Grays gained permission for abducting civilians and ‘expanding’ their biological program. [21] Clifford Stone distinguishes between ‘good’ and ‘bad’ extraterrestrials, and refers to the Grays as part of the ‘bad guys’ committing egregious abductions and that the U.S. government is unsure how to disclose this to the general public:
“The good guys [ETs] are, well, I like to refer to them as being nomadic. What you're talking about, about the non-intervention with other intelligent life forms is a universal law. The nomadics go along with that. The greys violated the universal law…. I think there is the effort for the good guys to make contact with the people within our government, but I think now what is happening is that the U.S. government learned in 1983 or thereabout that they are NOT dealing with the good guys, but really don't know what to do about it. [22]
The Grays are very active in human abductions, genetic experiments, monitoring humans through implants, mind control/programming, cloning and creation of hybrid humans. These contribute to systemic global problems such as humans traumatized by abduction experiences, genetically modified humans, implants for monitoring humans, and an overly passive population due to hypnotic mind control/programming.