Okay, so imagine you have a toy that you really love to play with. You've had it for a long time and it's really important to you. But one day, your parents say that you can't play with it anymore because they don't have any money to buy new toys. You start to feel really sad and frustrated because you don't understand why this is happening.
Now, imagine that this same thing is happening to a lot of people in your neighborhood, your city, and even your whole country. This is kind of what happened in Greece in 2010 and 2011. The government didn't have enough money to keep things working like they used to, so they had to make big changes to the way things worked.
This made a lot of people really upset because they felt like they were losing things that were important to them. For example, some people lost their jobs because the government had to cut spending. Other people had to pay more taxes or couldn't get as much help from the government as before.
All of this frustration and anger led to protests. People would gather in the streets and shout things like "We won't pay for their crisis!" or "Take back what you've stolen from us!" They also sometimes would throw things like rocks or Molotov cocktails, which is very dangerous and not a good way to solve problems.
The protests lasted for a long time and things got pretty intense. People were hurt and arrested, and the government had a hard time figuring out what to do to make things better. Eventually, some things did start to change, like the government cutting back on some of the things that were making people upset. But it took a lot of time, effort, and understanding on both sides to make things better.