"You selfishly put your kid outside everyday and let him be nothing but a nuisance," the letter reads. "He is a hindrance to everyone and will always be that way. ... No employer will hire him, no normal girl is going to marry/love him."
"Personally, they should take whatever non retarded body parts he possesses and donate it to science. What the hell else good is he to anyone!!!" it continues.
“It made me sick to my stomach to think that somebody hated my son that much and they didn’t even know him,” Max's mother, Karla Begley, told the Toronto Star. “But they just hated him because he was different. That’s the only reason they had to hate him.”
“He doesn’t know anything about the letter,” Karla said of her son's reaction. “He loves the attention, he thinks he’s famous.”
Lennon and Maisy Stella, two young Canadian sisters who sing and star on ABC's "Nashville," used their sizable Twitter presence to call attention to the frightening missive. On Sunday, they shared a photo of the letter that has since been retweeted nearly 6,000 times.
A close family friend has an autistic boy and this was an anonymous letter slipped under her door. This is real. pic.twitter.com/VyRb2oqPrG— Lennon and Maisy (@lennonandmaisy) August 19, 2013
Durham Regional Police rep Jodi MacLean said that authorities were taking the note "seriously."
"We are consulting with the Crown to see if there is any criminality that went on with the letter," MacLean said.
Karla said she hoped the letter-writer would be punished.
“If they don’t like different people, they should move away and be a hermit, because life is full of unexpected stuff, and that’s what makes it interesting,” she said.
Max did "his little happy dance" in return, his mother said.