Is the Pentagon spying on American Protesters?

A year ago, at a Quaker Meeting House in Lake Worth, Fla., a small group of activists met to plan a protest of military recruiting at local high schools. What they didn't know was that their meeting had come to the attention of the U.S. military.
A secret 400-page Defense Department document obtained by NBC News lists the Lake Worth meeting as a “threat” and one of more than 1,500 “suspicious incidents” across the country over a recent 10-month period.