This is so true, thanks Calebark, but to this you should add "but especially if they are in the public eye". People in the public eye must exert greater control than others, and they are under more pressure, and that is why I have so much respect for those sports-people and actors who do manage to maintain a good record.
Hm, I think I partially disagree here. Politicans must exert a stronger image in public as they're leading the public, and must strive to be good citizens. Community and religious leaders must have strong public presences, or else they could be quite hypocritical (depending on what morals they preach, I suppose). Parents too need to especially be good as they are responsible for others -- as should any other form of guardian for a young mind.
But athletes, actors, and the such don't have the public under their care. They ply their talents, which don't necessarily involve being in the public eye. If they're doing an interview, sure, keep a good image for your
own sake, but in any other sort of publicity, they have every right to be themselves. They should be able to pick high-profile professions without having to change who they are for the sake of being responsible. It should be up to parents/guardians to teach their children right-from-wrong enough for them to know not to mimic a celebrity's bad behaviour -- much as they should be taught not to replicate drug habits of a stranger or violent tendencies of a stranger on the news.
I just really don't think a person who
does not choose to be responsible for others has a moral obligation to be a certain type of person (or at least more so than everyone has an obligation to be good).
Morality falls on everyone. Public figures shouldn't be scapegoats for bad behaviours (not that you were necessarily implying so -- just in general

).