In 1940, a decorated French veteran of the Great War escaped the Nazis and fled to Britain. Nearly a year later, he broadcast from London an appeal to his fellow French Jews to join up on the side of the General De Gaulle and the Free French. His argument was that Jews should repay the constitutional freedoms they had enjoyed in France since the Revolution. The Vichy authorities condemned him to death in absentia. Many of the Jews that remained were of course condemned to death anyway.
On his return to liberated France, René Cassin was sent by his government to the United Nations, where he became one of the leading jurors tasked with drawing up a revolutionary document, the United Nations Declaration of Human Rights (UDHR). Adopted by the General Assembly in 1948, its aim was to try to codify and thus help to guarantee the “universal” rights of individuals and groups.
As Professor Francesca Klug has pointed out, several of the leading advocates of the UNHDR were Jews, including Raphael Lemkin, who originally coined the term “genocide”. One of its objectives was to take away, as she put it, “the cloak of national sovereignty behind which governments hide”. Of course that hasn’t stopped them hiding, just as it hasn’t stopped all genocides, but it has provided a benchmark against which citizens can judge their country’s goodness.
The Declaration, as endorsed by many national constitutions and regional bodies, is of course a hedge against oppressive majoritarianism. Because there is no tyrant, despot, autocrat, demagogue, opportunist or dictator who does not claim majority support for their actions, not least in dealing with minorities.