@matigo true. They claim responsibility actively especially when the shooter has died with identity unrevealed.
It ill behooves Canada to close its borders. Nevertheless, unquestioning inclusiveness[^1] is not smart. It‘s supposed to get wise to whom it should welcome and whom it should not. Many Chinese guys start their lives anew abroad by laundering money or engaging in what would be illegitimate in their home country.
[^1]: well, this is not true, for some of my acquaintances from Africa and Asia have been denied access to Canada for no decent reason. They are less likely to contribute to a fatal mass shooting than I am to assault Trump’s nostrils with a slingshot.