Who is to blame for people outside of America believing all Americans are super rich?

Now I like talking to people outside of the US because so many people here aren't into me and I do better with the European and Conservative countries. However, whenever I say I have trouble affording something or that I can't afford to travel, they are in total shock. There are also a lot of immigrants who say America isn't what they thought it was. Are there propaganda machines in other countries that are over glamorizing America, and if so who is manipulating these machines?