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One of the strongest predictors of someone's wealth is their country of birth (Roemer, 2000). The median annual per-capita household income in the world is US$2920 (Gallup). Median per-capita incomes in the top 10 wealthiest countries are more than 50 times those in the 10 poorest states.
If you truly believe in a meritocratic society (i.e. the idea that people's' status or rewards should be a consequence of their efforts) your main goal should be to finish with country borders rather than asking for a raise in the minimum wage. Having citizenship of a rich country by birth is not a merit. You do not deserve any preference for having a job due to the fact of being born in a specific place. In a meritocratic society, you would not even receive $8 an hour to do the job that millions abroad would do as well as you for $0.80 an hour. Demanding a meritocratic society when you are a blue-collar worker in a developed country is ridiculous, especially if you have a job that requires to be a national citizen (like many government jobs). Most likely, you would be much poorer if you lived in a truly meritocratic society. To ask only for a meritocratic society in your country while ignoring the rest of the world where 736 million people live with less US$1.90 per day is highly hypocritical (World Bank).
I am not saying that it is fine to have a non-meritocratic society within-countries. I believe that we would all be better off if our rewards were based fully on merits, but it must be on a global scale, not on a country level. Demanding a meritocratic society in your country, so that it benefits only you, suggests that you would not care about the poorer if you were in the rich people's position today. In fact, data shows that individuals with lower incomes are more likely to oppose immigration (Hainmueller and Hiscox, 2007). As one of the bases of social science research broadly states: people do their best to achieve their goals regardless of everybody else.