Lakeisha Holloway mowed down pedestrians while high, killing one and injuring dozens. Source: ABC 13

Kenneth Smith fatally struck a cyclist in Portland while high on marijuana.

Robert Dear, who killed three people, was described as a pot-smoking recluse.

Joseph Palmatier killed a man while driving high on marijuana in Corpus Christi.

Malachi Armstrong ran a red light and killed Miriam Wilson while under marijuana influence.

Brahim Abdeslam ran a bar known for marijuana use before joining ISIS and bombing a Paris café.

Driver who killed two motorcyclists had marijuana and heroin residue in SUV.

Noah Harpham, who killed three people, had a history of pot addiction.

Dianne Davidoff shot her 17-year-old son and used marijuana several times a day.