Around 250 revolutionaries gathered in Toronto on May 20-22 for the 2023 Congress of Fightback and La Riposte socialiste, the Canada and Quebec section of the International Marxist Tendency (IMT). The latest congress took place as global capitalism faces unprecedented crisis on all fronts, from rampant inflation and debt to the war in Ukraine to the accelerating climate emergency. In the face of intolerable conditions which the ruling class has no solution to, the masses are rising up and putting class struggle back on the agenda at a level not seen in decades. As class war heats up around the world, revolutionary workers and youth are increasingly looking to Marxist ideas for a way out.