Use "bad apples" correctly
If you're going to say,
"A few bad apples..."
perhaps consider the rest of the phrase¹,
"...spoil the whole bunch."
I hate to be semantically pedantic, yet due to ethylene, a bad apple truly can spoil the whole bunch open_in_new.
- Originating with, "A rotten apple quickly infects its neighbor." in ~1340 AD.
Speake, Jennifer (2015). The Oxford Dictionary of Proverbs. Oxford University Press. p. 271. ISBN 978-0-19-179944-0.