I don't know anything about Samidoun but events over the last year sure have made an impression on me. Among Western governments and legacy media, the criminalization of people and ideas opposing the Palestinian genocide is the most Orwellian thing I have noticed in my relatively young and privileged life.
Samidoun describes themselves as a Palestinian prisoners' rights organization. The opening words of NatPo's article describes them as: "Samidoun, the anti-Israel advocacy group based in Vancouver." Switch this to any other issue or identity and that level of editorial rebranding would be almost unthinkable, and probably legally actionable.
I can't say I disagree with this
“The Liberals cannot legislate away our right to free speech. If they contend we are terrorists, let them prove it in court,” said Charlotte Kates, one of Samidoun’s founding members, in a statement.