It's hard to say, but a guy on a bicycle said "slava ooocrane" and one guy in a car said f*** putin. That was in the course of 1 hour and 10 minutes. It's hard to judge how many people recognise it, but dozens of people do, I'm sure. Some people older than me will know the modern RF flag from the end of the Soviet Union. I was too young to understand it at the time, but as a child I remember looking at a country on the map called USSR and thinking, wow, this country is pretty big lol.