What do all these people have in common?

This is a multiple-choice question.  People who get it right will win a dinner with the person biden appointed to head the nation's  Nuclear Waste Disposal agency.

Carefully study the 23 faces below:

 What do these people have in common?  Are they...

1. all freshmen at Harvard ; or
   
2. all level GS-10 or higher in the biden regime ; or
   
3. all trannies ; or
   
4. all related to Senator Chuck Schumer; or
   
5. all recruited by the CIA ; or
   
6. all members of Mensa; or
7. all members of a riot crew arrested for firebombing a construction site in Atlanta ? 

All of those are reeeally good guesses, especially the first five.  But the answer is #7.