Social media has allowed horrific antisemitic attacks on people ranging from schoolchildren to one of Australia’s most prominent families, the antisemitism royal commission has heard.On Monday, former Westfield co-chief executive Steve Lowy told the inquiry his family had faced more than 15,000 serious online attacks in a single year.The Lowy Family Group has its own security team to monitor threats.Of the 15,000 attacks in the 12 months to February, the team identified 200 “persons of interest” and referred “in the order of” 30 or 40 to police.The commission was shown examples of Steve Lowy, his wife, Judy Lowy, and his...