Liberal leader Justin Trudeau was on the receiving end of a gravel-throwing incident in London, Ontario on Labour Day Monday. He has since called out those protesters, referring to them as an ‘anti-vaxxer mob’ that does not respect science. In Hour 3, our Political Heat panelists break down the latest news from the campaign trail. Meantime, thousands of students have finally returned to the classroom after months of summer vacation and online learning. How did Day One of the new learning season play out? What questions and concerns still remain? Kristy Cameron speaks to Tom D’Amico, the Ottawa Catholic School Board’s Director of Education.