rpm,
If I attend a concert that has been billed AS a concert I would prefer that it BE a concert...and not a political rally. If I know what I am going to hear I can at least make a decision beforehand about whether or not I want to spend my money to hear it.
Ronstadt's audience paid their money to hear her perform her hit songs, not give an in-your-face speech supporting a controversial political figure.
You have not addressed the latter part of my original post, which states that Moore and Ronstadt's films and actions are widening the political divisions in this country. That is beyond dispute, especially in Moore's case. Many of the comments on these bulletin boards are more bitter and vitriolic because of Moore's films and statements. Fahrenheit 9/11 is unique in film history, using cut-and-past snippets to level dubious charges against a sitting president, and distributed during an election year in the arrogant certainty that there was insufficient time for legal opposition to develop.
Conservatives, whether Democrats or Repupblicans, are not stupid. They know full well what Moore and the rest of the Hollywood crowd are attempting to do, use their unfettered access to a sympathetic press to "sway the masses." And so, the division of America continues.