It's not an issue of giving up identity, it's about taking partial responsibility and I find the alternative far more frightening. Saying "the USSR did this" feels like too much of a cheat and a weasel word. It reminds me of the whole "mistakes were made" line. After all, the USSR never did anything. It has no arms and legs. Everything was done by people.

Now, the question just remains as to which people get to be counted in that "we". Here, I'll move back to your sports team comment. The players obviously have the right to say "we won", since they were out there scoring points. The coach, however, was not. Does he get included in the "we"? How about the athletic trainer who fixed up the star player after an injury. Does he get to count himself? The team's owner didn't score any goals or pick any plays. Her contributions were far more abstract and mostly economic. Does she count? How about the station who paid the owner for the broadcasting rights? It's more nebulous and economic than the owner's claim, but still largely the same.

If the TV station seems like a step too far, imagine that it wasn't a soccer game, but rather gladiatorial combat that they were paying to broadcast. If someone at the station said "We killed fifty prisoners this evening", would you correct them that they hadn't actually killed anyone? How about the network's sponsors? Or the audience? They'd have just as much involvement with the prisoners being stabbed as they would with the goal in the soccer game. If they shouldn't identify with their minor part of the glory in the goal, why should they have responsibility for the other?