From the 1930s, Ságvári participated in the organization of anti-war demonstrations, and after the German occupation of Hungary during World War II, he joined the underground resistance.

[2] During the years of the Hungarian People's Republic, Ságvári was highlighted as a legendary leader and martyr of the anti-fascist cause, with several streets and institutions being named after him as well as monuments being erected to his memory.

László Kristóf, one of the gendarmes involved in the killing of Ságvári, was arrested and sentenced to death in a 1959 show trial.

After the fall of communism, attempts have been made to portray Ságvári as an ordinary criminal rather than an anti-fascist martyr; streets named after him have been renamed, and monuments and other memorials to him have been removed and taken down.

This process has been criticized by oppositional forces in Hungary, with Tamás Krausz, professor of history at the Eötvös Loránd University in Budapest, writing that the post-communist portrayal of Ságvári "reflects a wider tendency across eastern and central Europe to rehabilitate those who collaborated with the Nazis and prewar fascists, and criminalise those who resisted them.