'Hundreds-strong' mob of masked men rampage through Stockholm station beating up refugee children in revenge attack for female asylum centre worker killed by Somali 'boy'
Black-clad masked men targeted refugees at Stockholm train station
The mob, linked to football hooligans, targeted unaccompanied minors
Before attack they handed out racist leaflets with message 'Enough now'
They also refer to alleged murder of Swedish aid worker Alexandra Mezher
She was stabbed to death breaking up fight between two migrant boys
