It’s not “all of a sudden”. And it’s not “the world”. And it’s not even “America”. Rather, you’re now consuming media that’s exposing you to thoughts that have always been around, often on the fringes.
Remember, bigots have always existed, and polite bigots toe the line as much as they’re forced to. They aren’t going to disappear, ever. (That being said, we can make them less relevant and powerful.)