United States Holocaust Memorial Museum shooting
... that the perpetrator of the United States Holocaust Memorial Museum shooting had self-published a book praising Adolf Hitler in 1999?
... that the perpetrator of the <b id="mwDCs"><a href="./United_States_Holocaust_Memorial_Museum_shooting" id="mwDCw" rel="mw:WikiLink" title="United States Holocaust Memorial Museum shooting">United States Holocaust Memorial Museum shooting</a></b> had self-published a book praising <a href="./Adolf_Hitler" id="mwDC0" rel="mw:WikiLink" title="Adolf Hitler">Adolf Hitler</a> in 1999?