OK, so that video is kind of a festival of bullshit but the best kind because in it are kernels of truth. It breaks down like this though in terms of the main points. 

Inequality - Protest - Violence - Terrorism - Change

1. Nobody will give it to you, you have to take it. 

2. Saying you want it is not enough. You've got to be willing to go all the way.

3. Attempting to take it makes you honest. Be the wolf. 

4. Violence will be required. No one takes you seriously unless you will go that far.

5. Violent protest is terrorism but it is the path to change. 

That frightens the people that currently have the "power" because they see the truth in it, which makes it inevitable. 

Now there is truth in that but to say it is the only path is a mistake, it just is the most likely path. Do people fear that, sure they do, because if most people decided to use that method, civil society would explode.