Poor Leadership
In a democracy, the ultimate power lies with the people. This becomes a problem whenever people are uneducated on major issues or do not take the time to investigate candidates and arguments thoroughly. Because people are prone to making emotional decisions, a charismatic leader often has little trouble persuading the majority to vote a certain way, even if that ends up being the wrong decision.
This means that democracy is not a perfect system and when different people have different views it is bound to be complicated. Since the elected officials are only in power for short terms, this can also lead to a political system that has short-term focus and is not working for the betterment of society long-term.