Explain With Illustration The Proverb "Dogs Of The Same Street Bark Alike"?

It probably means that the people who are together is a group always go for the same thing blindly by getting influenced even though that particualar thing would be absolutely wrong...
Like when you are in a group fight and your group is the one whos wrong but still you side with your group rather than going to the opposition group.
It can also be taken for like-minded people..