Here is the rub for Vladimir V. Putin: The people who stood outside the Kremlin on Saturday, chanting epithets directed at him, are the ones who have prospered greatly during his 12 years in power.   

 

They were well traveled and well mannered; they wore hipster glasses. They were wonky (some held aloft graphs showing statistical deviations that they said proved election fraud). In short, they were young urban professionals, a group that benefited handsomely from Moscow’s skyrocketing real estate market and the trickle-down effect of the nation’s oil wealth.