Some folks whom you might consider secondary
players can face criminal charges. That's because the law punishes those who
participate in crime without directly doing the dirty deed.
Accomplices, Accessories, Aiders, and Abettors
States define criminals in different ways--principals, accomplices, accessories, aiders, abettors, and conspirators--depending on how the person participates in the crime.
What state of mind is required for aiding and abetting?
Under the principle of accomplice liability, you can be convicted of a crime simply for help
Can you be an accessory after the fact to a misdemeanor?
An accessory after the fact is someone who, knowing that another person has committed a felony, helps that person avoid arrest, trial, or punishment.