For decades, a giant, inflatable rat with beady eyes, sharp teeth and a pustule-covered belly has been looming over union protests, drawing attention to construction sites or buildings with labor disputes. Over the decades, Scabby the Rat has become an icon at the site of labor disputes and weathered multiple legal challenges. Now Scabby's challenge is staying relevant in the age of new technology and social media. Scabby has a Facebook page, and QR codes that give people information about campaigns. But younger people often don’t always know what the rat symbolizes.