ONE BAD APPLE SPOILS THE WHOLE BUNCH

We define a bad apple as "someone who creates problems or causes trouble for others; specifically, a member of a group whose behavior negatively affects the remainder of the group." Although a troublemaker's behavior may not be representative of the whole group, it can be an influencer. Remove them from your midst. Don’t be contaminated by their bad conduct. Yes, it is correct that “one bad apple can spoil the whole bunch."