This headline is subtly dismissive.
"Angry" and "right now" both suggest a transient state. That's not what we're seeing.
"Canada has finally had enough of the USA" would be a more apt title; or "Canada reaches its breaking point."
Alongside of the #Never51 hashtag is an almost equally frequent #NeverGoBack. Canada, as a nation, as a people, are making the decision to go their own way, and never be so beholden to any country as we have been to the USA since 1959.
Never. Go. Back.