Here's more of why we don't believe in mob rule in the United States BOF:
http://thefederalist.com/2016/09/16/the-electoral-college-still-makes-sense-because-were-not-a-democracy/
The sad lot of the Electoral College is that what you see isn’t what you get. Like the counter-intuitive fact that a tire blowout on the right requires a steering wheel correction to the left, the EC works backwards. What appears to deprive the populace of its power to decide a president is the very mechanism that preserves its power. It works that way because this isn’t a democracy; not a pure one.
“Pure democracy” is just another phrase for “mob rule.” Dictatorship of the majority means 51 percent of the citizenry rule the other 49 percent. That minority has no rights except those the condescending majority grants. It works well for those in the 51 percent, not so much for those in the 49. Plato knew it, and James Madison, who knew his Plato, did too. Plato and Madison both recognized that justice and liberty for the minority is possible only when power is shared between groups in society.