The family of Tim McLean is stepping up its lobbying efforts for victim protection legislation they call "Tim's law."

Tim McLean is seen in this undated photo with the daughter of his friend William Caron. (Canadian Press)

McLean, 22, was brutally killed aboard a Greyhound bus last July near Portage la Prairie.

His mom, Carol deDelley, has said Tim's law would put the rights of a victim of crime ahead of those of the perpetrator. The proposed legislation would prevent a person found not criminally responsible of a crime from being released into the community.

It would mean that the most violent, unpredictable people who have committed a crime would face incarceration for life, with no possibility of parole.

"I don't know what the outcome is going to be, but we want to inspire Tim's law to become a reality, to make sure that his life isn't wasted," said McLean's aunt Paulette Speer. "We want there to be more [support] provided to protect the victim and not the guilty person."

McLean's family is selling T-shirts, buttons and fridge magnets to support its effort to press the government for the legislation. The items are made by Speer and her husband, who operate a promotional product business in Winnipeg.

The family will sell the items at a rally in Brandon on Friday.

McLean was returning home from a job in Edmonton when he was stabbed to death by a fellow passenger aboard the bus about 8:30 p.m. on July 31, 2008.

Vince Li faces second-degree murder charges in the stabbing and beheading of Tim McLean on a Greyhound bus in July. (John Woods/Canadian Press)

Vince Weiguang Li, 40, of Edmonton, has been charged with second-degree murder. His trial begins March 2 in Winnipeg. The case was moved from Portage la Prairie because Li has received death threats.

At trial, it's expected the issue will not be whether Li killed McLean but whether Li can be held criminally responsible for the death if he was suffering from a disease of the mind.