Are divisions inherent to the working of democracy?

Yes, to some extent divisions are inherent in a democracy of newly independent countries. After the second world war introduced most advanced political institutions based on linguistic and regional diversities like:
=> representative parliamentary government,
=> proportional representation and
=> an elaborate bill of rights.
For example, India, Belgium, U.S.A and Sri Lanka had made such provisions to suit diversities in their country.
Some other factors like age and education were also used to create divisions, like;
=> in Switzerland you could vote at 20 and 30 in Denmark.
The best suitable example of inherent divisions in a democracy is India which is the largest democracy in the world. In spite of all the diversities and social linguistic, religious as well as regional problems we have remained a united and integrated democracy.