<a href="https://en.wikipedia.org/wiki/The_Holocaust" id="mwARM" rel="mw:WikiLink" title="The Holocaust">The Holocaust</a>: <a href="https://en.wikipedia.org/wiki/Adolf_Hitler" id="mwARQ" rel="mw:WikiLink" title="Adolf Hitler">Adolf Hitler</a> orders the cessation of <a href="https://en.wikipedia.org/wiki/Nazi_Germany" id="mwARU" rel="mw:WikiLink" title="Nazi Germany">Nazi Germany</a>'s systematic <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Action_T4" id="mwARY" rel="mw:WikiLink" title="Action T4">T4 euthanasia program</a> of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Mental_illness" id="mwARc" rel="mw:WikiLink" title="Mental illness">mentally ill</a> and the <a href="https://en.wikipedia.org/wiki/Disability" id="mwARg" rel="mw:WikiLink" title="Disability">handicapped</a> due to protests, although killings continue for the remainder of the war.