On the flipside, it must be noted that Boris Nemtsov was also a governor during the disastrous Yeltsin years. Appointed by Yeltsin. He's not popular in Russia. He was a has-been, trying to keep his profile up by being more and more anti-Putin.
And his death is already being used for political purposes.
One has to ask the question, is Putin the worst chess player of all time? Or is there more to this story?
Yushchenko - 'poisoned', leads to a revolution in which western interests take over.
Maidan protesters shot - leads to a revolution in which western interests take over.
Nemtsov shot - leads to an anti-Putin media barrage, and more interest in a march that is a regular, albeit not particularly significant event. Suddenly more significant today.