Where are you from? It's weird to me that you on the one hand defend the US, but on the other DID notice all these armed guards everywhere you went in Europe. If you don't feel it's different, then I don't think you should have noticed it so much? Or if you do notice it everywhere, why would you equate the US and Europe without raising a critical stance against these kinds of policies on either side of the atlantic?
I think you can get a sense of what kind of person they are by this kind of comments [0][1].
[0] https://news.ycombinator.com/item?id=49697884
[1] https://news.ycombinator.com/item?id=49441324