I am of Slavic descent (Russian in particular), so the Latvian one intrigued me...
AFAIK, I wouldn't really call Latvia Slavic per se at all and the Latvian language speakers were not really of Slavic descent. I know many in the U.S. seem to think of Latvia as some sort of Eastern European and Russian land, but that's basically a total misconception simply because the U.S.S.R. was occupying the country recently and the whole Eastern Block/Western Block thing. Latvia is Western/Northern European and more tied to Germany/Sweden/Norway, if anything, and really not so much Eastern European and it really had nothing to do with Russia whatsoever. The culture and vibe really was not Russian at all, but much more like Northern Europe or Germany. The alphabet is a modified western (modern Latin) one, not Cyrillic. The language retains more archaic forms than most other Indo-European ones still around.
I mean the U.S.S.R. took control of Latvia for a few decades post WWII since they wanted the nice sea port on the Baltic and all but that was basically the Russian connection, that the lands got taken over and occupied by force for a few decades (1940-1941 and 1945-1991), although the population is about 30% of Slavic decent currently now.
(and getting back to the Seinfeld episode, the whole big thing with the Latvian Orthodox church was 100% totally made up and somewhat ridiculous (granted most things on Seinfeld are ridiculous), yes the Slavic countries were almost all Orthodox or Catholic, but Latvia is not and it's mostly Lutheran and I hate to say it but basically not a single Latvian thing in the episode is even remotely Latvianish at all)
Latvians here substitute for generic Slav. Do not hate! Remember, from the Russian standpoint, all East Europe is Slavic!! (Or should be...)
Also, the 7D is a far more Russian style camera of use. Imagine, Hitler's troops, if cameras were guns (as the Youtube videos seem to show sometimes). They would be using 1DX's and even medium format SLR's. Stalin's men would have had to have slugged it with 7D's, a mixed hand full of Rebels, and sigma and Tamron lenses.