I think you should pay less attention to mainstream media which propped that issue up disproportionately. It wasn’t as big of a deal as many made it out to be.
But regardless of that, I don’t think one should be concerned about opinions of people and I certainly don’t think it is an issue at all if young people hate the US. It has done some of the most fucked up things in the world since the start of the last century to say the least. This may be expressed in stupid ways like sympathising for Bin Laden, but the broader sentiment of hate towards the US isn’t wrong.