Y'know....as an English bird I have a sort of inherited disdain for the French......but actually on the couple of occassions I have visited France the people have been lovely. They've been friendly and helpful and if you make even the slightest attempt to talk in French they tell you what it should have sounded like then drop into English to be helpful

Now I am sure not all of them are like that but my experiences of French people have been entirely positive.
Why they may have a beef with Americans? well that is a whole other story. They ( like many Europeans) have seen America grow up into a huge world striding bully with power and arrogance to rival the British Empire at it's height and which percieves itself to be above ( or seperate from) the rest of the world community. ( eg complete disdain for the UN, a refusal to sign up to a world court unless it's own soldiers are exempt and the refusal to sign up to kioto)