Canadian Motorcycle Cruisers of Clarington rally in support of Maxwell Begley

Maxwell Begley. An anonymous letter sent to Maxwell's grandmother's house suggested he should be "euthanized". (Courtesy Begley family)

People across the country were outraged when Maxwell Begley's family received a hateful anonymous letter complaining about the autistic teenager and suggesting the family "euthanize" him and donate his "non-retarded body parts" to science.

Ontario police are investigating the letter.

To show support for Maxwell, 13, and his family, the Clarington chapter of the Canadian Motorcycle Cruisers (CMC049) organized a motorcycle rally.

They drove from a Newcastle Tim Hortons to Maxwell's grandmother's house a few kilometres away, where the nationally-despised letter was delivered.

Maxwell, who loves motorcycles, was made an honourary member of the Canadian Motorcycle Cruisers.

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"We want him to know that he is loved and to let his family know that there are more people who care about them and understand what they are going through," said group member Ron Morissette.

About 200 bikers took part in the rally.

"It started off with a few of our members, I thought it was going to be 10-30 bikes and this thing has just totally taken off," Rob Cochrane, who heads up the Clarington chapter, told the Toronto Sun. "We're getting support on our Facebook page from all over the world."

"We were completely disgusted just like everybody else that’s seen it," Cochrane added. "It hit home because it’s close to our neighbourhood, we have some members from our motorcycle club who have autistic children so I got in contact with the family."