There's a phone call that's never far from Arman Abrahimzadeh's thoughts. It's the one he got in 2010 saying his father had just murdered his mother.
"My father planned it, clearly he planned it," Mr Abrahimzadeh said. "He pulled out a big knife he [had] hidden in his coat and stabbed her in front of 300 people."
Mr Abrahimzadeh says his mother's murder was the culmination of 24 years of domestic violence the family suffered at the hands of his father.
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