"he planned to assassinate Hitler"
was the leader of the Nazi Party
in Germany before and during the Second World War
. A committed Fascist, he believed that the German race needed to be purified; his solution was to murder those he perceived to be impure, including Jews, Gypsies and homosexuals. The result was the genocide of millions of people.
Various plots to assassinate Hitler flourished during the 1930s and early 1940s, both among Allied troops and among Hitler's own soldiers, but none of them was successful. Hitler eventually shot himself in an underground bunker in 1945 when it became clear that Germany was about to lose the war.