Possible Clues:

• One of the Freedom Fighters vocal on the circuit
• Member of the Resistance vocal on the circuit
• One fighting back
• Dealing with nun, an oppositional figure
• One will stand up to this about a relatively 28 across matter
• There's something about a relative that stands up to one
• Don't give in about 32 across
• One will not give in about one in the family
• One will stand up to it about one in one's family
• It concerns hospital worker - the one offering to stand up and be counted