Because they are unpatriotic traitors. It's sick. This is treason in a time of war, and if you aren't with us, you are against us.
It's obvious that these people who are badmouthing Chicago have never been there, nor have they ever been to Rio. To compare the corruption and crime of Rio to Chicago is laughable on its face. I would feel safer in downtown Chicago at 3A than in Rio at noon. Also, I never saw any bouncers in Chicago standing outside holding machine guns like I did see in Brazil. And you can actually stop at traffic lights in Chicago after dark, in Rio, you just blow them because the risk of car jacking is so high.