Warning by Green Day is an anthem of defiance and individualism. The song challenges societal norms and warns against blindly following authority without questioning it. Its key themes include rebellion, self-awareness, and the importance of thinking for oneself. The lyrics critique the safety nets of society that people rely on, like 'fire alarms and burglar bars,' suggesting they create a false sense of security and lead to complacency. Poignant moments include lines like 'Caution: police line, you better not cross' and 'I said warning, live without warning,' which encapsulate the song’s call to live freely and authentically.