Lyric discussion by tufafropuf 

Cover art for Enclave lyrics by Sonic Syndicate

The definition of an enclave is:

enclave - an enclosed territory that is culturally distinct from the foreign territory that surrounds

So basically it's a territory that belongs to a specific culture that refuses or at least attempts to keep themselves separate from the surrounding society. For example, in Minnesota there is a huge Somalian enclave in St. Paul and they very much stick to their traditions.

"We are uninvited guests In this melancholy world And soon you learn That the only thing worth to treasure, Are the people that actually care"

...this verse is basically introducing the idea that they are separating themselves from the traditional society and that they need to rely on only each other to get by.

"SO I'M TRYING TO TEACH YOU SOMETHING BUT YOU TURN AWAY SO I'M TRYING TO SHOW YOU THE PATH BUT YOU'LL WALK ASTRAY"

...this set of lyrics describes their refusal to completely conform to the society around them. I have had experiences with people who are labelled a cultural enclave and these lyrics describe exactly what happened. You try to teach them, they don't want it. You try to show them, they don't want it.

The way I see it, is that the person who wrote the lyrics for "Enclave" was highly educated in human geography. They were able to take something that struck them and turn it into a very moving song.