Answer:
anonymity
Step-by-step explanation:
Deindividuation generally occurs when an individual's identity with a specific group overrules his or her self-awareness and identity. It hinders an individual's capability to think critically.
According to the "deindividuation theory", the term 'anonymity' denotes a person's loss of concern and self-awareness towards self-evaluation within a particular group setting and therefore enables a person to participate in aggressive or anti-normative behavior.
As per the question, the given statement is an example of how anonymity contributes to deindividuation.