What did the Levellers mean when they said: "God made Men, and the Devil made Kings?" Has their call for social justice been answered in England? What about other parts of Europe... world? Is this still a current theme?

The statement: "God made men and the devil made kings" means that man should be more revered and holy than the aristocracy. To some extent the call for social justice from the Levellers has been answered as monarchical power in Europe and the world has lost leverage vis-a-vis parliamentary and presidential systems that are more democratic.

Explanation:

The Levellers were a group of radical Protestants during the English Civil War (1642–1651). They were in favor of popular sovereignty, wider suffrage, and  legal equality. They believed that social justice should be part of Parliament's agenda.  They published a pamphlet called: "God made men and the devil made kings" to express the idea that they revered the common man above the aristocracy and that the aristocratic system was corrupted. The pamphlet called to pay the parliamentary members so they would not have to be wealthy to govern.  To some extent the call for social justice has been answered as the monarchy has lost power relative to the rest of society and in many European contexts where the monarchy still exists it has lost power and functions mostly symbolically rather than in real governmental terms.  Social justice in general is still a current theme in that now immigrant rights and the rights of those who are socioeconomically disadvantages vis-a-vis-elites is still a theme.  

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.