Warum verhalten sich Letten im eigenen Land wie Russen?

My money is on “owner of the car speaks russian and does not identify as Latvian”

Wuuut? My deepest apologies to OP, but have you ever travelled outside the Baltics? This is not about the near/slavic people talk. This is a topic about correct infrastructure, fair[high] fines, and people as themselves. In Norway, Finland/Nordic countries, you will see this kind of stuff almost never, as your car will be towed almost immediately, but the same Greece will surprise you so much more compared to this pic!