The Serbians did that for two years straight, until their government resigned and called for new elections. Look at videos from a protest: https://www.reddit.com/r/europe/comments/1jc29fk/breathtakin...
If a much poorer country with (for now!) much worse repression can do it, what's your excuse, Americans?
Politics isn't just the ballot box every couple of years. Politics is always and everywhere.