How would you react ?

I was at a gas station standing in line this guy come in an goes straight to the front of the line and nudges the lady at the counter out of the way and says twenty on 2. So I speak up and say hay man there is a line he turn to me and says he is not waiting in any line and what I could do with myself. So I say look man you need to wait your turn and then the weirdest thing happened the people ahead of me said almost in unison its ok he can go first. They all looked at me like I was the one in the wrong for saying something I just looked at them in disbelief. somehow they perceived me as the aggressor. what would you do? I just walked out.