The only problem is we are NOT a democracy. We are a representative republic.
We are also a Constitutional Republic, the document serving (in theory) to severely limit the scope and reach of government authority. Over the last 200 years the AW's (@sswipes, not assault weapons) who we have put in office (including judges) have spent a lot of time like little rats nibbling away at the Constitution or in "redefining" its principles in order to further this or that agenda. So now, the Constitution doesn't limit government in any way. It has been turned around so now it limits individual liberty instead. And it has all happened so slowly that we either didn't see it or didn't care. And it happened while we, the people, were still armed. I don't see much cause for optimism.