When I was a young guy, 1960s, if a LEO asked you for ID you better have it and you better show it or you were going to jail. Sounds to me like those guys were asking for it and they got it.
Well, that era of history was not known for it's foundation in American Freedom. Just because that was your experience doesn't mean it how it is now or how it ever should be. We live in a constitutional republic that doesn't require us to 'carry our papers'. I know, it's such a little thing to get annoyed over, but then again, our fore fathers would have thrown a fit if they knew the police were running around doing stuff like this.