Ghandi and MLK would disagree. Peaceful protest (getting your enemies to attack unprovoked) doesn’t work in a dictatorship where the will of the people is irrelevant, but in a country with elections it is lethal. The civil rights movement was going nowhere till the let loose dogs and hit the protestors with fire hoses. Those images changed the minds of a majority of our own country.
Till the massacre at Amritsar Ghandi wanted to work with the British. That violence is what lost India for Great Britain.
The horse trampling the old lady may be Trudeau’s Selma.
I'm going to say that the situation today is very different and will not have the same results.
Propaganda is and always has been the prime way public get motivated.
During the various scenarios you mentioned, the "news media" was full on dedicated to being anti government and trying to tear down the traditional establishment in favour of their socialist ideas.
Look at the media coverage then (horrible brutal government, innocent poor peaceful protesters) as compared to today where the "news media" as well as the Big Tech that controls public discourse are all hand in hand with the Socialist dictators that run the government and ruthlessly clamp down on any dissenting speech while hyping up the propaganda to WWI levels of insanity.
Most people are sheep and believe the propaganda they are fed, so unlike in the past, the sheep are told to hate the oppressed and told that the oppressed are being oppressed because they are evil selfish people who won't "just obey for the good of everyone".
Then you have elections, the problem is that we don't have free and fair elections.
I would dare say at least half the country knows the last USA federal elections was frauded, but few seem to care because the propaganda has told them not to care.
Now it's coming out that the last Canadian Elections may have also been similarly frauded.
As such don't expect elections to change anything except to be a rubber stamp and show for the dictators to claim they have a "mandate from the people" to crush all dissent.