Sam Adams and Paul Revere both used propaganda to rally the colonist after the Boston Massacre.
Paul Revere did this by creating an engraving called "Bloody Massacre" in which he depicts the British military opening fire on innocent American colonists who were unarmed. Even though this was not exactly how the event started, the depiction of the event angered colonists who believed that Revere's interpretation was accurate.
Sam Adams used his social and political influence to rally the colonists after the Boston Massacre. He used propaganda to convince people to join the resistance against Britain and established the committee of corespondence system shortly after the event.