In the United States, Canada and other anglophone countries our leaders have coddled white supremacy and made excuses for it when people commit terrorist attacks. This was a terrorist attack but notice how the media won't say it was a terrorist attack, because that would imply this is part of a terrorist ideology and white supremacy is a terrorist ideology. They would rather believe this is a "gunman" not a terrorist, but he is a terrorist following a terrorist ideology.
There should be an immediate crackdown, these groups should be treated like al-Qaeda is treated, these are terrorist groups who have motive to carry out terrorist attacks.