Determine the emotional tone of the following tweet: "#IfOnlyPeopleWould not exist. #humanity #life #ignorance #nature #mothernature #sad #disappointment #smh #personal #opinion #views #animals". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".