This youth on the subway refused to move his legs, so this guy decided to sit on him

Perhaps the reason the mother chose not to interfere in what her son was doing was because she preferred to use a hands-off parenting style when it came to raising him.

Maybe she wants him to learn his lessons and make his judgments, which would explain why she just sat there and let the youngster be obnoxious to other passengers while she still did nothing after seeing a guy sit on him.