Here's another song, oft-karaoked, that contains a mistake that just a little bit of due diligence would've easily corrected.
The U2 song "Pride (In The Name Of Love)" has a lyric in it alluding to Martin Luther King Jr.'s assassination. "Early morning, April 4/Shot rings out in the Memphis sky," Bono sings, but the civil rights leader was actually murdered in the evening.
He was shot around 6 p.m., so Bono could just change the lyric to "early evening," which he sometimes does. But that probably confuses the stadium full of fans no doubt singing along to the tune. I think there's something to be said, however, about the poetry of early morning versus evening. Let's give Bono a pass on this one and just encourage people to read their history and not take what superstar musicians say as gospel.