] The Federal Bureau of Investigation has been questioning
] political demonstrators across the country, and in rare
] cases even subpoenaing them, in an aggressive effort to
] forestall what officials say could be violent and
] disruptive protests at the Republican National Convention
] in New York.

All the seditious talk has apparently attracted some attention. Look for them to claim that their free speech rights (to disable buses and disrupt meetings) are being curtailed.

The New York Times - F.B.I. Goes Knocking for Political Troublemakers