<span style="color: #222222;">Three sisters have demanded the execution of their father for the brutal killing of their mother last week in South Korea.</span><br />'' <br />'' <span style="color: #222222;">Nearly one and a half lakh South Koreans have backed their demand till today. The trio's mother was stabbed to death by her ex-husband in the car park of her apartment complex last week after years of physical abuse. </span><br />'' <br />'' <span style="color: #222222;">The daughters said in a petition filed on the website of the Blue House, that their father should be isolated from the society. The Blue House is the executive office and official residence of the South Korean President. </span><br />'' <br />'' <span style="color: #222222;">The murder has shone a spotlight on South Korea's poor handling of domestic abuse cases, where the perpetrators are often assigned to counselling or given restraining orders.</span><br />