The US is paying organisers of the rent-a-crowd to try to destabilise the Gov. Anybody doubt that ?
Up to 100,000 protesters (not all voters)out of 140,000,000 Russians (not all voters) is miniscule.
Yes, also legitimate protesters involved. 1,000,000 turned out in the UK to protest attack on Iraq and were ignored.
A majority in the US oppose Obama.  So what.

You mean 8 Million Muskovites?

tens of millions of people stand to see their lives ruined because the bureaucrats at the ECB don't understand introductory economics -- Dean Baker

I'm just pointing out that

100,000 protest against Putin.  
135 million dont.
Do the math

is in incomplete summary of the content of the article, you could as well say

"100,000 protest against Putin.  
100,000 protest for Putin.  
135 million don't either way."

I don't know what the math is supposed to be.

Also, are the 100,000 pro-Putin protesters a rent-a-crowd, too, or not? What is the received wisdom here? That Putin can or cannot astroturf supportive demonstrations?

tens of millions of people stand to see their lives ruined because the bureaucrats at the ECB don't understand introductory economics -- Dean Baker