Why are pure democracies prone to the problem of faction?

Answer 1

Pure Democracy cannot cure the mischief of faction because if the faction is a majority, than they will pursue their interests at the expense of national welfare. [majority rules does not necessarily guarantee an appropriate outcome]

Answer 2

Pure Democracy cannot cure the mischief of faction because if the faction is a majority, than they will pursue their interests at the expense of national welfare.

Answer 3

Sloth, Human Nature, and multiculturalism...