On tax day, April 15, 2010, hundreds of thousands of Americans took to the streets with signs demanding lower taxes on the richest one percent. But why? Rich people have plenty of political influence. Why would they need to publicly demonstrate for lower taxes-and why would anyone who wasn't...

On tax day, April 15, 2010, hundreds of thousands of Americans demonstrated with signs demanding lower taxes on the richest one percent. Where do protest movements like this come from? Rich people are an unpopular minority with plenty of political influence. Why would rich people need to...