A sick, probably insane soul who needs to die in prison, but it was his minions, particularly one Tex Watson, who did the actual devil’s work those two August nights in 1969.
It has been a long time since I read Helter Skelter, but it was my take that one of the women killed Tate. Sharon Atkins states she stabbed her. I’m not going into all the details, but this was a particularly vile senseless set of murders. (admittedly restating the obvious here)
Anyone involved at any level should have been fried in the early 70s.
This link will touch on a number of the issues. It doesn’t get as graphic as it could.
http://en.wikipedia.org/wiki/Sharon_Tate
He should have been gassed 40 years ago! But the faint heart libs let him slide.