In my opinion, the most important mass media innovation in the 21st century is YouTube.

That website gives everyday people around the world the ability to document and research what politicians are saying, and have said.

Think about the impact of capturing what former Virginia Senator George Allen said on videotape. Here's
a clip.

What is ironic is that immediately right before he identifies that college student using that racial slur, Allen says these words:

"My friends were going to run this campaign on positive and constructive ideas. And it's important that we motivate people for something".