There's some ex-KFI (LA news radio station) broadcasting out of Seattle who's interviewing a former city security/Secret Service background guy. He said exactly the opposite...that a tax-protester mad @ govt would make some govt entity a target. He thinks it's more likely "external" (his word for outside terrorist)
There's no "tax" symbolism at all in the Boston Marathon & killing 8 yo boys.
I would agree. Even that scumbag McVey targeted a group associated with his specific beef. I'm not going to point fingers at Occupiers, even though there have been several who are in jail for trying to blow up a bridge full of commuters. Targeting the Boston Marathon, an apolitical but nationally recognized event, seems more like Islamic terrorists.