Gun sales and a mental health crisis among young people, both of which spiked during virus-related lockdowns, are seen as risk factors in school shootings.
Supreme Court agrees to hear a challenge backed by National Rifle Association to New York state's restrictions on people carrying concealed handguns outside the home.
New measures include plans for the Justice Department to crack down on self-assembled "ghost guns," and make "stabilising braces" subject to registration under the National Firearms Act.
The shooter, whose motivations are so far unknown, sustained a gunshot wound and was taken to hospital, police lieutenant Jennifer Amat has said, adding the suspect was in a critical condition.
Australian white supremacist Brenton Tarrant admits murders of 51 Muslim worshippers last March in Christchurch city, in a surprise change of mind, police say.
Most of the shootings in Canada have been blamed on gang violence and illegal guns with PM Trudeau saying the ban will include AR-15 lightweight semi-automatic rifles.
"God Control" features a graphic nightclub shooting, calling people to "wake up" to the reality of arms ownership and use.
Police said shots were fired from a car into a crowd standing outside the two-story Love Machine club, hitting three security guards at the nightclub and one patron.
A terrorist attack on two New Zealand mosques took the lives of 50 worshippers on Friday and left dozens more wounded when a white supremacist opened fire and live-streamed the shootings.
The United States has the second highest death rate by firearms globally. Now guns are also affecting a significant number of children.
Is anywhere safe anymore? Dalia Azim dismantles the paradoxes of fear and xenophobia towards the Arab world as an American introducing Egypt to her children for the first time.
Americans marched along a Chicago interstate on Saturday, shutting down traffic to draw attention to the gun violence that's claimed hundreds of lives in the city recently.
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