Sad indeed, but let us not forget other martyrs. Martin Luther King, and Allende, who were not murdered by the Russians
James Earl Ray (March 10, 1928 – April 23, 1998) was an American fugitive convicted of the assassination of Martin Luther King Jr.

I am sorry to hear of Navalnys death, but it is important to keep it in perspective, and to remember other assasinations carried out by other super powers, including China and Belgium
This sadly is not a new phenemenon, Stalin Mao and Western super powers have in the past all been guilty of political murder
Patrice Émery Lumumba , Belgium formally apologised for its role in the execution.