The United States House of Representatives in March 2016 unanimously passed a motion declaring the mass killings a genocide, followed by the Scottish parliament, the British House of Commons in April 2016, Canada in October 2016, the French Senate and National Assembly in December of that year, and the Armenian parliament in January 2017.

While Prime Minister Benjamin Netanyahu, Justice Minister Shaked, and others broke ranks with Western leaders to support Kurdish independence, Israeli leaders have not staked out a public position on aiding the Yazidi plight.

Separately, the Knesset has repeatedly refrained from recognizing the Armenian genocide, primarily to avoid angering its official ally and rhetorical foe Turkey.

It's true that for example Stalin's murderous crusades are rarely highlighted in the West. For example the Ukrainian famine. The Turkish massacre of an estimated 1.5m Armenians during WWI.

13 million Chinese died under Mao.

Personally I can't think of many countries that don't have a rather murderous history I try to judge them on what they do today not what past generations did.