Katy Perry is roaring about how much she dislikes social media.Late on April 14, the "American Idol" judge tweeted, "Social media is trash." Just two minutes later, she followed up by adding that social media is "the decline of human civilization." Katy unapologetically included the hashtag "I said what I said."social media is trashThe "Firework" singer's tone is interestedly, as she, like many celebrities, often uses social media to promote her projects. the decline of human civilization