Crime in the Denver metro area actually ballooned during Covid, when it was somehow determined that people could take what they want and destroy what they choose to, and face little or no consequences.
This was before the big influx of migrants. I'm not suggesting some migrants haven't contributed to the problem, nor am I against deporting or incarcerating people who break the law. Just be aware that most of the stupid policies that made this area less safe had nothing to do with the border or immigration.