All that is ever shown is students supposedly protesting. That doesn't mean very much. While there were students protesting in America and Europe in the 1960s, they didn't come close to overthrowing the government. So I'm not impressed by these pictures in the least. When I see an endless sea of people stretching out to the horizon, then I will believe a revolution is eminent. But that's pretty unlikely. The Iranians took a chance in 1979 thinking it couldn't get any worse. They are not likely to take another such chance.
What will probably happen is that as the current generation of rulers retires and dies off, they will be replaced with reformers. The writing is on the wall - the old guard is on the way out. There's no need to try to rush things, as a tincture of time cures all. Unless we bomb them and screw everything up.