The Clintons killed journalists. Does that count? And Obama has probably killed journalists, too.
Honestly, unless Trump has inside knowledge the way many connected billionaire do - there is no proof the Clinton’s murdered anyone either. But it seems that way. I will add, we have freedom of the press and it can do damage. Russia’s press freedoms are not the elaborate and independent reporting would do limited damage. Many cases of journalist deaths came over reporting on crime figures. This is why many journalists fear for their lives in Mexico reporting on the cartels there. That is a more realistic reason that a journalist would be killed in Russia rather than any expose they would write on Putin.