Rage is anger that wasn't addressed. If you ignore righteous indignation it becomes anger. It if you ignore anger, it becomes rage. A natural progression.
The purpose of rage is to tear down. Rage is destructive. But, we often (and I am not talking about personal experiences here) must destroy in order to rebuild.
I know the personal rage you experienced, Deborah, was devastating but it developed the same as collective rage. That person's anger wasn't addressed so it became rage. But, it's one person (typically) who needs an intervention, help, therapy. And, if the rage isn't alleviated, that person can, hopefully, be contained so as not to do harm.
But, when the rage is cultural, how do you contain thousands, other than by genocide? At some point, the rage needs to be addressed. Changes must take place. If not, the rage continues until all are dead - individually or collectively.
I am not condoning acts of rage but I can understand them, especially on a cultural level.
Deborah, I appreciate all the sympathy and support our Canadian friends have offered during this time of Trump. I have a great affection for Canada and its people. Knowing that so many have empathy with us is heartwarming. Many of us would have moved there after the 2016 election if we could have.