The Nazis, during World War II, considered genocide to be acceptable, as did the Hutu Interahamwe in the Rwandan genocide. One might point out, though, that the actual perpetrators of those atrocities probably avoided calling their actions genocide, since the objective meaning of any act accurately described by that word is to wrongfully kill a selected group of people, which is an action that at least their victims will understand to be evil. Universalists consider evil independent of culture, and wholly related to acts or intents. Thus, while the ideological leaders of Nazism and the Hutu Interhamwe accepted (and considered it moral) to commit genocide, the belief in genocide as fundamentally or universally evil holds that those who instigated this genocide are actually evil. Hitler considered it a moral duty to destroy Jews because he saw them as the root of all of Germany's ills and the violence associated with communism. Osama bin Laden found it moral to kill all Christians and Jews because he saw Islam as under attack by Western and US influence, accusing the US and Israel of forming a Crusader-Zionist alliance to destroy Islam, and considering US troops in Saudi Arabia infidels in the land of Islam's two holiest sites. He therefore considered non-Muslims and Shiite Muslims evil people intent on destroying Islamic purity and therefore heretic.