From where does a sense of community come?

In biological terms, a community is a group of interacting organism or species sharing an environment. As a science student, community has different levels of interaction. But what does that mean, you ask? I define this by asking what makes up a community and its levels?

A Community has to interact. How? Well there are the neighbors, town-hall meetings and being a volunteer. Now all though these qualities make a community. The question is when does a community come together? Majority would think of a tragedy or an accident or a concern.

I believe a community comes together when there is a need too. September 11th was a devastation and it made America look weak at the knees. The powerful country has been defeated- some thoughts however. Little by little people united of all races and begin to contribute to support the victims of that tragedy. Since 9/11 people have become less trustworthy of other due to the fear of terrorism. Everyone is paranoid of another possible attack- but the question still remains where does community form?

To be honest, community only comes when people need it. Its insulting to say it but true. The massacre of the student in Columbine was horrifying but it made the town come together however watchful of others. Isn't America insecure in a way? To me its always someone suing someone- for inconsiderate reasons.

The only way a community can come is to be one before any tragedy comes about. That's the only time you hear the community "come together" but I didn't include the Holidays. I think a community is just people interacting with each other everyday; for example, sally waving to her neighbor. Community could be close however underneath that trust there is alway idiots who screw it up.

Communities are hard to build and stay on top. However community reunites together when there is hope and need of acceptance. We've all made mistakes, but once a community is broken the mistake will be luring.