It's much easier for me to look at what's changed around me, my town, my friends, myself - so my view on this is subjective.
Changes for me, personally: The shock of everything pretty much wore off after about 6 months, I became more reflective, less angry. The bombardment of images from that day were no longer a staple every time I turned on the news. When I see a symbol, such as a flag on a bumper sticker, or billboard signs - these symbols that weren't there on September 10 - I am constantly reminded of the horror of that day, and that I won't ever forget where I was and what I was doing when I first caught wind of what was happening in NYC.
Around me: The patriotism has died down, as was predicted. It's just not as fervent as it used to be. Sure yeah, people are still patriotic but they are less inclined to wear it on their sleeve or on their car. As a whole I think a lot of people (my friends, co workers, family, casual associates) feel the same way as I do. The anger has subsided a bit, and now is a time for more subdued reflection and personal resolve. People are moving on with their lives, though they aren't forgetting, they are just trying to forge ahead because if anything, what happened on Spetmeber 11 reminded many of us that life is precious but you can move on while still holding the memory of what happened close to you. Also, nearly half my friends have lost their jobs in the past year - possible backlash of what happened on 9-11 in an already failing economy (one friend who worked for United Airlines)
I think some people have found comfort in religion, it has given them something to hold onto - members of my family have gotten more involved with their synogogue, some friends of mine got more active with their church. I think this shift in religious activity was spurred by what happened on 9-11 because it allowed these people to find comfort in other who share the same beliefs or thoughts.
Politics - this is a tough one, and I'm sure given the nature of this forum, could possibly turn into some sort of debate.
I am no more politically aware now than I was before September 11, as I've always tried to keep abreast of what's going on around me and in the world despite my harrowing schedule. I think at first, this country, although it was unified by the horrific events of 9-11, was divided on what the US should do in retaliation to what happened. I still think people are, but they aren't as vocal or they are simply exhausted from the turn of events. *shrug*
Right after the events of 9-11, people were very fearful of travelling, and wondered which town was going to be "hit" next by terrorist attacks. I personally think this is still in the back of people's minds as they pass through security gates at the airport, still in the backs of their minds when they hop on a train, or are at large events with large crowds - but as I said previously people need to move on and I think people are trying despite whatever fears they had/have.
Overall, where I live which is on the west cost of the US, I think people have moved on, or they are trying their best to do so. I don't mean to sound callous, that's not my intent at all - but we all have our lives to live. We have adjusted to the current climate, if you will. I don't think the horror of 9-11 or the reverberations it has caused emotionally, socially, politically, etc. will ever be forgotten nor do I think time will soften the memory of the tragedy (at least for me) - the climate has changed and it's only been a year. We are still, despite moving on, trying to acclimate.
sorry for making this a long post.