Muslim father is jailed for 27 months for attacking headmaster and racially abusing teachers in row over school ban on beards
- Mohammad Liaqat became enraged after two pupils were banned from lessons after refusing to shave off their facial hair
- The 34-year-old also launched a racist tirade at another Catholic school in Lancashire and 'shoulder barged' the head teacher
- QC has also banned him from going within 100 yards of four schools
- Lancashire policeman described Liaqat's behaviour as 'completely unacceptable'