Protest emigration is when a group of people moves from their home country to another country because they are unhappy with the way things are in their own country.
Let's say you have a toy that you really like to play with, but one day your little brother takes it away from you and won't give it back. You might get really upset and want to go play with your friend's toys instead. That's kind of like what protest emigration is, but instead of a toy, it's about a whole country and the way it's being run.
Sometimes, people who feel like they're not being treated fairly in their own country might want to leave and go somewhere else where they will be treated better. This could be because of things like politics, human rights violations, or discrimination against certain groups of people.
People who protest emigrate are usually very passionate about their beliefs. They might be willing to leave friends and family behind and start over in a new place just to have a chance at a better life. It can be a difficult decision to make, but sometimes it's the only way to make a change.