Christchurch victim rights advocate Norm Withers believes it is an awful idea for the Government to go soft on bail, parole and sentencing laws.
On Wednesday, Newshub revealed the three strikes law could be repealed in two weeks and Justice Minister Andrew Little would also push for sentences shorter than two years to be served as home detention.
Mr Withers' elderly mother was severely beaten in 1997 when she was looking after his menswear store.
He started a law-and-order petition that gained so much public attention it forced a referendum in 1999 for more support for victims of crime and tougher penalties for offenders.
He told The AM Show that while the move would reduce prison numbers, people who remained on home detention could still offend.
"These people are a waste of space and they have plenty of opportunities and they just don't reform.
"What they [the Government] do on the day, we have no control over. They must remember that they are elected to represent us and some of them aren't doing it very well."
The three strikes policy was introduced in 2010 and dictates that repeat violent offenders will not be eligible for parole after their third offence.
Mr Little told Newshub it would be repealed "because I think there is acceptance it just doesn't work".
"If you have a sentence of two years or less, you're at the lower end of the offending. You might have offended before but you're at the lower end, we can still do something with you, so its better that you're out in the community."