A bunch of people ganging up on the little guy (since little guy isn't always in a literal sense, little can also mean unpopular, the little guy is the underdog regardless of actual physical size).
Synonyms for Safety in numbers
On this page, you will find 30 slang terms related to Safety in numbers. Some of the top words include: dupe, chuco, rat dick, willing father, Piss ant, and 25 more.