"Those who make peaceful revolution impossible will make violent revolution inevitable." - John F. Kennedy
You'd think oppressive leaders would learn that lesson by now. But no, it seems we're more likely doomed to repeat it in cycles, over and over again. I wonder what those politicians who come up with the idea of "hey, let's make protesting virtually impossible. That will all our problems!".
They need to understand that protesting is that an effect of a cause. If the cause isn't fixed, those issues and frustrations the people have won't just go away. They will build up, until they explode.