You joined to protest on streets or spent at home with your computer?
Can you explain the purpose of going into the streets?
The aim is to show that you have a lot people and you are committed.
Committed to do what? If you cannot touch the leaders in a meaningful way, it is pointless.
To starting an armed struggle against the authorities. In this case, blood is spilled.
The street protests means that.
Oh, I imagine the government must be really scared of trying to attack its population with the most modern weapons money can buy. An armed struggle will just destabilize the country, but will not have any effect on the government if they want (look at dictatorships), unless the military decides to stop supporting the government (which is why unmanned vehicles are getting so popular).
We are going to a society in which the president can select all the demonstrators from a database (automatically based on camera data, of course), press one button and kill all of them. This might be done by sending missiles, but it could also be done by analysing the DNA, finding a biochemical agent which mysteriously kills a particular part of the population of just one specific individual (they can create flying machines the size of a musquito already that no doubt could also be equipped with some untraceable poison). You can do it slowly enough, and the people will never notice what hit them. You also don't have to completely kill them, you just have to weaken them. For an example of that look at the presidential candidate of some Eastern-Europe country that was poisoned.
This might sound radical, but I am not the one who invented the every increasing more efficient weaponry on which the US (and other nations) spend about a trillion dollars a year. Everything in the previous paragraph is technically already possible, and 80% is probably already implemented or could be operational in a year after the system is desired. Systems of control like that simply have never existed before in history.
In a country in which there exists an asymmetric power balance between large parts of the population and the government, you get tyranny. I am not suggesting that everyone should have access to their own nuclear bomb, but owning a gun or even a tank (if lots of people in the community vouch for you for example) should be perfectly reasonable and perhaps even mandatory.