Here's an embeddable copy. Go to it.
I'll add marginalia here as I parse the thing.
UPDATE: The timeline starts on March 1, 2010, when the IRS developed the Be On the LookOut document—BOLO for short.
Determinations Unit personnel indicated that they used the description Tea Party as a shorthand way of referring to the group of cases involving political campaign intervention rather than to target any particular group. The specialist used Tea Party, Patriots, and 9/12 as part of the criteria for these searches.
If you've already forgotten "9/12" was the name of Glenn Beck's branch of the Tea Party movement. And this chart shows that the affected groups had a little more than a quarter of all scrutinized applications.