When I applied for a job at CNN in the 90s, and told the interviewer that I had interned with an evangelical magazine called Christianity Today, his response was, "If it's Christian, it isn't journalism."
Over the years that expanded to, "If it's evangelical, it's Republican. Or Jerry Falwell. Pat Robertson. The Tea Party. Wrapped in a Patriotic Flag. White People. Derivative, cheesy music. Big Money. Big Hair." Fill in the rest of the blanks.
Are those labels a distortion of what it means to be an evangelical? Of course they are. Yet they are how evangelicals are perceived, rightly or wrongly (I personally think it's a mixture of both), in our society.