"Police action against the demonstrators was disproportionately tough," Ursula Plassnik said in a statement Tuesday.
Over the weekend, anti-government protesters clashed with police in St. Petersburg, and more than 100 were detained, including several journalists.
"The right to assemble, freedom of speech ... belong to the basic values of every modern democracy," Plassnik said, adding that Russia had committed itself to the respect of such rights.
Human rights questions will be on the agenda when Russian President Vladimir Putin visits Austria on May 23-24, Plassnik said.
There are legitimate authorities in Donetsk and Luhansk republics now, with which Russia can implement the project of the economic integration of the Donbass
Russia has been developing an energy module on the basis of the megawatt-class nuclear power plant since 2010. The spaceship needs neither sunlight nor solar batteries