I think you're describing a different phenomenon here. One that I certainly agree is real. But I don't think Queen Elizabeth's death, for example. woke anybody up to the truth of systemic oppression. I don't think anybody was helplessly triggered into rage by the news of it either. The rage was already there. The news was just a handy post-hoc justification.

Nor do I think the outrage merchants spinning it to rile up their audiences are expressing themselves unskillfully. In fact I think there's a certain degree of skill in conjuring drama from events they don't really care about.