A "guideline" is supposed to provide rigorous oversight...how many guidelines have you heard of that provide rigorous Anything? Basically the government wants to be able to Datamine every single database within their control for anything suspicious. Unfortunately the definition of "suspicious activity" can be elastic enough to be almost anything.
Occupy Wallstreet? - suspicious
Protest against Oil drilling - suspicious
Blog post criticizing NY police "stop & frisk" - suspicious
Criticize the Feds for overstepping on something - suspicious
Sad - we are sleep waking into the Total information awareness state. The terrorists attacks have worked - they have destroyed the very values that America was built on