Am I missing something?

So some protesters go to another country, participate in an illegal protest, get arrested and ... the whole world freaks out? What did people expect? And why is it such an international incident? What happens to people who go to, say, the USA, participate in an illegal protest and get caught? Why does the world not react with shocked outrage when the USA, or Great Britain, or Canada, or Germany, or France or any other country in the world arrests and ejects lawbreakers?