There are fewer protests these days because people are catching on that they don’t accomplish dick. As to leaving, people have families. Not just their immediate family but think aunts, uncles, cousins. It’s not trivial to leave all that behind and move somewhere where you know no one and have no support structure, and maybe you don’t even speak the language. And to even consider it, you’ve got to have the time and money to expend on moving, and your destination country has to agree to let you in. It’s not a simple undertaking.