What about the 'tyranny of the minority'?
Minorities tend to block vote for certain candidates that best suit their needs as marginalized group and because the 'majority' splits its votes across the board, the 'minority' candidate can often end up winning. Look at Canada. You only have to vaguely raise the French issue with a Canadian to be on the receiving end of an all out political rant about this sort of situation.
Not only that, you can also have a situation in hyper-egalitarian societies where authorities can end up overcompensating for the disadvantages experienced by the minority (often motivated by the above political scenario) and effectively offer them greater rights and greater political/cultural status than that of the majority (which, arguably, is increasingly happening in my own country).