Allen allegedly shot and killed Air Force veteran Ramona Cooper and retired Massachusetts State Trooper David Green in Winthrop on June 26. Both Cooper and Green were Black, and the District Attorney said Allen passed several white bystanders before shooting the only two Black people he saw.
State Police retrieved the journals from Allen's apartment, all written in his own handwriting, and all of which contained violently white supremacist views.
"White people are the worlds apex predators," said one notebook, "The white race is superior," it continued. Another notebook found next to Allen's bed was titled "The Allen Diaries," and was written less than two days before the shooting.
"Racism is healthy and natural. And holding it in is bad for you.....1,000,000 yrs. of evolution molded me to hate these subhumans," he wrote, after which he drew two swastikas on the page.
The D.A. said the Allen family did not know about Allen's racist views, and that they are "...Mourning the loss of the Nathan Allen they thought they knew. This man had fooled so many, outwardly appearing stable and upstanding while internally filled with...hatred.”
She said the family is "devastated" by the deaths of Cooper and Green, and is fully cooperating with investigators.
Both Green and Cooper were laid to rest in emotional ceremonies this past week.
Winthrop Police Chief Terence Delehanty called the views expressed in the notebooks "despicable" in a press conference Wednesday afternoon, and said "...We all have to speak out against it. That's the only way we're going to heal, and the only way we're going to move forward."
Written by Chaiel Schaffel