Are you trying to imply that citizens of a country have no civic or social responsibility, short of running for public office or performing some act of extraordinary heroism?
Speaking for myself, I do feel that people have social responsibilities. But these responsibilities are to society, not to any nation-state. My own choice, once I had successfully dodged the draft, was to remain in the country of my birth and try to make it a better place (until, eventually, I became cynical and said "screw it!") And I applaud those who choose to remain and work for the good of others. But I don't feel that anyone has a reaponsibility to any given country. Which means that everyone, IMO, has a moral right to leave if they so choose.
Note that I also think that running away seldom results in a better life. Exceptions are refugees and draft dodgers (which in any case are a category or refugee). People who leave a country because the president is a baboon and a pustule are not likely to be any happier somewhere else. But they have the right to do so. And such people probably weren't making their home country any better anyway. Because activists usually are committed people who stay and fight. Runners are seldom people who were working to better their country.
Which makes the whole question a bit moot: If you're the kind of person who puts time and energy into bettering your country, you probably don't really want to leave, and if you're the kind of person to run away because a baboon and a pustule got elected to office, you probably weren't doing anything to make the place any better.