For some reason that song "Let 'em In" has come in for a lot of stick over the years. If you listen to it carefully, it is actually one of Macca's (few) songs about the bigger picture. It is about being able to welcome all sorts of people into your life who may be able to bring something new into it. He quite deliberately mixes the names of the great and good with those of his family - Martin Luther King, Auntie Gin and brother Michael. It may not be everyone's cup of tea, but I find it one of his most moving songs.