If we take the word "democratic" as a declinable adjective -- "democratic", "more democratic", "most democratic" -- USA is democratic to some minimal extent. At least they get to elect the representatives, who elect the semi-dictator of the country. After an election campaign where media exposure is paid with bribe money (also known as "donations to election candidates").
Compared to USA, countries like Finland are a bit "more democratic", because:
- Political power is shared by a larger group than in USA, we don't have a semi-dictator system which concentrates so strong powers in the hands of one person.
- Bribery (aka "donations") plays a less massive role in our election process.
- We have three equally strong main parties (left, center, right), instead of only two in USA (which both look like right-wing parties, compared to European politics), so in USA one party typically has more than 50% rule over the political life, in countries like Finland nobody has over 50% share, and all decisions must be discussed with other parties.
But I don't support the idea anyway that majority (over 51%) has the right to dictate the lives of large minorities. This is often taken for granted that everything is OK and "democratic" if we have a system where 51% of people support the decisions that are made in the country. I think that 51% of people should have the right to decide for 51% of the national budget, no less and no more. And 51% of people should have the right to decide the laws for 51% of the national territory, no less and no more.