Do you try to engage them in conversation, or do you expect them to approach you? Also, there's a give and take in even the most casual of "friendships." If you expect them to take interest in things like movies and history(which they normally might not care about), you'll have to show some interest in the things they like as well.

Also, like others have said, you sound like you see yourself as superior to them. They might be able to sense that from your tone and body language, and that's why they're not being very friendly to you.