It is not a matter of “politics” to note that the killer’s manifesto referenced the “send them back” theme Trump has been striking about congresswomen of color. It is not a matter of politics to note the president’s use of hot-button words like “infest” to reference Mexican immigrants and connect it to the manifesto’s anti-immigrant theme. In true Trump style, the killer even used the president’s rhetoric — “fake news” — while also trying to absolve Trump of responsibility.