"Demagoguery is leading to cesspools of hate on social media, and it’s leading to a rise in hate crimes," says Conservative leadership candidate Michael Chong.
"It's a terrible reminder of why we must remain vigilant. And why the president is taking steps to be proactive, not reactive," said White House press secretary Sean Spicer on Monday.
Prime Minister Trudeau created a bit of a stir over the weekend when he tweeted a thinly veiled message to the American administration about how Canada welcomes refugees regardless of their religion.
Quebec City police have confirmed they have at least two suspects in custody following a shooting at a local mosque. There are reports of multiple victims wounded and killed in the attack.
Permanent residents must present valid identification that proves their status in Canada, said Immigration Minister Ahmed Hussen, and dual citizens should travel with their Canadian passport.
The University of British Columbia and the University of Montreal pulled ads in recent weeks after they became aware that their promotional material was appearing on the site.