If you are performing “The Star-Spangled Banner’’ at a public event, think twice before using it as dance music or as part of a medley. Deviation from the script can mean a $100 fine.
Think twice, too, about cursing at sporting events. A prohibition took effect in 1963, when both Red Sox and Patriots fans had little reason to cheer. And steer clear of more serious offenses, such as joining a subversive organization, committing blasphemy, or having consensual sex with another adult outside marriage. All could land you in prison.