The suit was filed two days after city councilors passed the ban on the sale and possession of assault weapons.
The ban was proposed in response to the high school shooting in Parkland, Florida.
Many argue that the bar for Colorado's "imminent danger" statute is simply too high and that state needs a red flag law to lower that bar.
Democrat state Rep. Alec Garnett proposed the bipartisan 'gun restraining order' bill, which empower judges to temporarily remove firearms from potentially dangerous people.
Democratic State Rep. Alec Garnett’s bill allows a judge to keep firearms out of the hands of people who may be a risk to themselves or others.
There were many parallels drawn between the 1999 Colorado shooting and the February shooting in Parkland, Florida.
Statistically, people with mental illness are no more likely to become violent than people who don't have a diagnosed mental illness.
“Enough is enough!” chanted the protesters around the state. “Not one more!” "Prayers are not enough!”