This doesn't surprise me at all. It's very common on BART, but since we have posted a few comments regarding this very problem, thought I should share what I saw today.
At the Civic Center Station, a mom, with 4 kids, were approaching the BART ticketing entrance.
The oldest kid, a boy about 7 or 8, goes directly to the ticket gate and asks, "Mom, how do we get in here?" The woman answers, "No, ***, you get over here, follow me, we're going this way."
She then proceeds to the side handicapped swing door and directs her children to walk that way. All five of them got onto the ticketing platform this way. This took place about 12 feet from the station agent sitting inside the glass window.
Frankly, I was pretty disgusted. It's because of people like that the rest of us have to pay around $8 roundtrip daily to get to work and back.
I said to her loudly, "You forgot to pay." Being at least 8 feet from me, she conveniently ignored me and went on to board her train.