Regulation bullying is where a serial bully forces their target to comply with rules, regulations, procedures or laws regardless of their appropriateness, applicability or necessity.
Legal bullying - the bringing of a vexatious legal action to control and punish a person - is one of the nastiest forms of bullying.
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What is bullying? Types of bullying, bullies tactics, how bullies select their victims, the difference between bullying and harassment