First off, the question should be directed to the minister, not to me. I'm not here to answer questions.
You asked where it comes from. In every poll that I've ever seen.... I'll quote one. Ipsos did a poll that reported, “Eight in Ten (82%) Canadians Support Federal Government's Ban on Military-Style Assault Weapons”. That was on May 28, 2020. It's available on their website. You can check that. It's public polling, so it's available for anyone who wants to look for it.