LONDON — With one puff of a cigarette, a woman in Canada became a global symbol of defiance against Iran's bloody crackdown on dissent — and the world saw the flame. A video that has gone viral in recent days shows the woman — who described herself as an Iranian refugee — snapping open a lighter and setting the flame to a photo she holds. It ignites, illuminating the visage of Ayatollah Ali Khamenei, Iran's highest cleric. Then the woman dips a cigarette into the glow, takes a quick drag — and lets what remains of the image fall to the pavement. Whether staged or a spontaneous act of defiance — and there’s plenty of debate — the video has become one of the defining images of the protests in Iran against the Islamic Republic’s ailing economy , as U.S. President Donald Trump considers military action in the country again. The gesture has jumped from the virtual world to the real one, with opponents of the regime lighting cigarettes on photos of the ayatollah from Israel to Germany and Switzerland to the United States. In the 34 seconds of footage, many across platforms li