What places should Americans avoid traveling to?

I love to travel to different places and learn new things or to just see the sights. But my friend told me that the best way to see more of the world would be to actually leave the US. Ignoring the fact that i'm afraid of flights due to 9 11, I'd like to know what places don't allow american tourist. I'd also like... show more I love to travel to different places and learn new things or to just see the sights. But my friend told me that the best way to see more of the world would be to actually leave the US. Ignoring the fact that i'm afraid of flights due to 9 11, I'd like to know what places don't allow american tourist. I'd also like to do volunteer work overseas eventually.

My question is, are there places I should not go because I'm an American. (I'm also an African American, I don't want to go to a place where i can be killed because of that)

I love islands and different cultural foods or languages.

Places I'm considering:
Finland, Aruba, Jamaica, Bermuda, Bahamas, Key Largo, Mont ego, Cuba, Mexico, Madagascar, Africa, Japan, Australia, China, Italy, Paris, London, Canada, Brazil, Singapore, and el salvador.
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