Excellent point. I was reminded of that recently when we had a fire drill at work (more likely a renovation person tripped it). Everyone exited via the revolving main door, which it was getting clogged by people waiting to get through. I was leaving with a co-worker and he went instead to the emergency exit door, which no one had used. He said "That's what it's for." Then suddenly a bunch of people saw that and started using it (some preferred to wait).
It was a good reminder for me that in certain situations you have to look for alternative solutions and NOT go with the flow. Look around you, think for yourself, and be willing to set aside certain conventional norms (civility and humanity not being among them).