How did Nazis justify the persecution of political opponents, such as leftist and communist?

Nazis justified the persecution of political opponents, such as leftists and communists, by portraying them as traitors and enemies of the state. They claimed that these groups were seeking to undermine the unity and strength of the German nation, and they viewed them as a threat to the ideology of National Socialism. Nazis also used propaganda to demonize political opponents, portraying them as dangerous radicals who were intent on destroying traditional German values and institutions. Additionally, Nazis justified their actions by claiming that they were acting in the best interests of the German people and protecting them from supposed subversive influences. Ultimately, the persecution of political opponents was justified through a combination of propaganda, misinformation, fear-mongering, and the manipulation of public opinion.