Possible Clues:

• Extremists
• Extreme group
• Rough agent heads up police force linked to gangster's people seeking militant reform
• Extremists produced state flags hanging around college
• Rancid "Give 'em the boot, the roots, the ___"
• Some revolutionaries
• Station doesn't finish calls without starting lecture to militants
• Dail cars no longer needing progressive politicians
• Reaction-prone atoms
• People who seek fundamental or drastic reforms