I'm prepared to believe the incident happened as described, but I don't believe the 'social worker' was in fact a genuine social worker. Firstly because she would have known her behaviour was unprofessional and very probably a sackable offence, and secondly because if the beggar was indeed one of her clients he would surely have recognised her and moved on to the next carriage.
The young mother was teaching her children compassion, a wonderful and valuable lesson to the young. Let them grow up before they learn cynicism.
In danger of becoming estranged from adult children
Adverts that are being shown on the tele
They're offering a service that we can pay for or not. Admittedly the quality of that service varies from place to place. The buskers in Leeds centre are so good, I can only think they have to get through an audition process before they're allowed to perform 

