We use uncountable nouns or plural nouns to talk generally about something, and we use the definite article "the" with singular nouns or uncountable nouns when the context is specific.
Now I don't understand why "the" is not used in the first 4 cases? This is very confusing especially when you compare them with the last group of examples which follows the above rule.
The BBC: There are a range of laws that help to promote equality and social justice in Northern Ireland.
The Guardian: Indeed, no other diagnosis has had a more dramatic impact on law and social justice in the USA.
The Financial Times: “The remarkably small increase in unemployment in the eurozone reflects the success of the government job subsidy schemes and an exodus from the labour force in Italy,” said Andrew Kenningham
The Guardian: I immediately encountered the differences between higher education in the US and higher education in the UK.
The Telegraph: Where is the social justice in a country where a privileged few have such enduring dominance and the best chance of success in life?
The BBC: She also said she had a "real desire to see the social justice in our country turned around"
The New York Times: The Trump administration accused Chinese citizens of stealing scientific research and told the country's diplomats in Texas to leave
The Independent: VIPKid has set itself apart by recruiting American teachers and positioning its services as similar to the education in top US schools.
The Guardian: Dr Tyson insisted that all the evidence showed that very few jobs had been lost in the West because of this threat. "Almost all of the unemployment in the West has been caused by the dramatic drop in demand," she said.
The Guardian: The World Bank knows it: the education of girls is the surest way in the world of reducing poverty.
The Guardian: (Strangely, the same liberal democracy has apparently been able to survive the unemployment of millions of blue-collar workers. But we will let that pass.)