Instead of revolution and all its upheavel & damage, you get a mini controlled revolution every 4 years.
Instead of unmitigated riots, you get demonstrations but with some crowd control & beurocracy to prevent injuries (and well chaos, riots and looting).
Democracy is kind of a deal - you get to have the popular discontent but without the extreme forms that end up damaging bystanders.
What you are describing here, are the requirements. The implementation, is usually, much, much different.
Instead of revolution and all its upheavel & damage, you get a mini controlled revolution every 4 years.
Instead of unmitigated riots, you get demonstrations but with some crowd control & beurocracy to prevent injuries (and well chaos, riots and looting).
Democracy is kind of a deal - you get to have the popular discontent but without the extreme forms that end up damaging bystanders.