7. The Rainbow Maniac
Number of Victims: at least 13
Also known as the Paturis Park murders, the string of killings happened between 2007 and 2008 in Carapicuiba, Brazil. All of the victims were gay men aged from 20-40, and nearly all were shot in the head. The park was an area known for its prostitutes, and the last victim was shot 12 times in the head. The media dubbed the killer “The Rainbow Maniac”.
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