26 to 61? Rather old for such stupidity. After looking up other articles, it seems that some parents let their children throw bread and a bottle of water into the enclosure, so the parents are banned in place of the children. Just a guess though. A man spat water at a panda, so some so-called adults are definitely nguilty of their own childish behavior. So far, the other articles indicated that the people were Chinese with no mention of foreigners involved.
In fairness, if a Chinese person does that, they probably end up dead.