Not all zodiac signs are violent, but six have a stronger proclivity to become psychopaths/serial killers.
Dangerous sign with dark emotions, but no need to be afraid if they can manage them. They conceal their emotions well, yet envy might escalate to violence.
Scorpios have a dark imagination, power, and manipulating abilities. They can become vicious killers and even head a gang of crooks.
Can be dangerous and may consider stealing rather than murder. They're difficult to catch, yet they have a positive side that keeps them grounded.
Craves luxury and money and may commit fraud or a scam to obtain them. It is unlikely that he will resort to violence.
Aries is impulsive and aggressive, and they can act out their insane notions. Hitler was an Aries. Make them upset, or face the consequences.
Capricorns are famed for their self-control, yet they are also home to numerous serial killers and psychopaths. They are plagued by terrible ideas.