More than 250 people who were protesting coronavirus lockdowns in Australia were arrested Saturday and many faced fines for defying health orders, authorities said. At least seven police officers were treated for injuries after skirmishes broke out at some of the protests, which took place in multiple cities nationwide. The largest and most violent protest was in Melbourne. Many were organized by people in encrypted online chat groups. Sydney has been in lockdown for two months, while Melbourne and the capital, Canberra, went into lockdown earlier this month. Under the rules of the lockdown, people are mostly confined to their homes and have limits placed on their social interactions.