I came across these students as they were headed towards to the Russian consulate here in Thessaloniki. The local authorities were taking no chances and about three platoons of riot police were on hand to make sure the 30 odd kids got nowhere near the building.
For more on the background on last year's dispute between Georgia and Russia check out these sites
2008 South Ossetia war (Wiki)
Georgia licks wounds one year on (BBC)
Russia, Georgia commemorate war (Al Jazeera)