The Second Chapter in Pirkei Avot, misha #4, discusses the point of not separating oneself from the community - al tifrosh min hatzibur.
What does Hillel mean by this statement?
Why is this an essential quality to a Jewish lifestyle?
How does one distance themselves from the community and why is it so bad to do so? What are the ramifications?
What are the situations when one should separate themselves from the community, such as not giving into peer pressure that is negative?