On June 4, about half a million people marched into central Warsaw to protest against Poland’s governing Law and Justice party. The date marked 34 years of sustained Polish democracy.   

Since coming to power in 2015, the conservative-nationalist Law and Justice party has been accused of subverting democracy by stacking the courts with sympathetic judges, seizing control of state media and targeting women’s reproductive rights. But what brought Polish people out to the streets — in the largest demonstration since the 1980s — was a new law that will set up a government commission to investigate alleged Russian influence in Poland between 2007 and 2022.  

The proposed nine-member commission will have the power to investigate individuals suspected of being unduly influenced by the Kremlin, and hold open hearings into their conduct. 

Opponents of the legislation argue that it is intended to punish opposition politicians ahead of pivotal parliamentary elections this fall. The legislation has been compared to McCarthyism, a purge of individuals suspected to be under socialist and communist influence in the U.S. in the 1940s and 1950s.