^^Manson’s motivations for the murders were that he thought if he could kill a few prominent white people and leave evidence on the scene that pointed to the black community, there would be a race war that would spread throughout the US and possibly the world, Europeans and Asians against Africans. He and his clan would hide out in the desert until all was exhausted, then rule the survivors.
The Tate murders were partially a revenge killing. Two birds with one stone. Manson wanted Doris Day’s son, a record producer, dead for not recording Manson’s music after he’d promised to do so. When Manson had met DD’s son at the beach home of Brian Wilson of the Beach Boys, DD’s son lived in the house that director Roman Polanski and his wife Sharon Tate had moved into in the interim. So, Manson’s minions killed the wrong people, but still served the purpose of the revolution.
The LaBianca murders were purely random, chosen because it was a big house with a car in the driveway. The LaBianca murders were because Manson didn’t get the violent popular reaction that he expected. He was going to continue until he did.
This was what he called Helter Skelter—the racial war and resultant regime under Manson. He got the idea from listening to the Beatle’s song Helter Skelter over and over again while tripping. He interpreted the song as describing all the above, and a personal message to him from the Beatles that he would be the leader. He convince his followers of this after a prolonged regime of acid, then sent them out to do their duty.
Nuts, huh? Nuts Redneck style.