Simple Set of Protest Related Vector Line Icons. Contains such Icons as Petition, Police Forces, Riot, Strike and more. Editable Stroke. 48x48 Pixel Perfect. Shutterstock .eps vector - Simple Set of Protest Related Vector Line Icons. Contains such Icons as Petition, Police Forces, Riot, Strike and more. Editable Stroke. 48x48 Pixel Perfect. - ID: 657705175