Flag burning is legal. The Supreme Court said so. Our right to burn the American flag, the Stars and Stripes, the Red, White and Blue, the very Star-Spangled Banner, is protected by the First Amendment. But some states still have anti-flag burning statutes on the books, and, regardless of what the High Court says on the matter, many, many people don't like it when you burn the flag.
Which leads us to the curious case of Bryton Mellott of Urbana, Illinois, who decided to torch Old Glory on Independence Day, take photos, and post those photos to Facebook. What happened next may not surprise you: people got angry and Mellott was arrested. But then he was released and all charges were dropped.