So here is what happened. I go in to Dominick's Grocery store on saturday night with 2 friends to buy some stuff for dinner. We got food to make stirfry and we figured we would have a bottle of wine with it. Now, i am 21 and so was one of the friends I was with, but my other friend is only 20. So we go to check out and I intend to pay for everything. Instead of just carding me for the wine the cahier decides that he needs to card me and both of my friends. I said, "really?" So he goes and talks to his manager and she insists that he needs to check all 3 Ids. So I go over and talk to her and ask her why. Instead of just giving me an answer, she completely bites my head off as though I am an idiot for asking. She goes on and on about how it is state law. So I ask her, so what if my friends would wait outside and I get back in line? She says that this would be fine. I then make the mistake of asking her if this makes any sense to her, and then she gets all pissed of again and proceeds to scream at me for another couple of minutes while I just stand there. So I go back to the line because I am holding everyone else up, pay for my groceries, minus the wine, and leave. If she didn't want to sell me the wine because of laws, fine, but there was no reason for a store manager of all people to be so incredibly rude to me. I felt so embarassed. We proceed to all go to the liquor store right next store and I was the only one carded. I have bought wine at this Dominick's before with my 20 year old friend there without a problem. I hate how people assume that just since I am only 21 I must be causing trouble. If I had been 50 and been there with a 20 year old that was not my child, no way would they have carded them or been so rude. Does anyone know what exactly Illinois state law says in a situation like this.