記事内の引用について
Gardena security guard accused of killing man after dispute over mask at market; couple charged: DA(KTLA5より)
https://ktla.com/news/local-news/gardena-security-guard-accused-of-killing-man-after-dispute-over-mask-at-market-couple-charged-da/
Woman, Her Husband and Her Son Charged After a Security Guard Was Allegedly Shot Over Mask Dispute(Peopleより)
https://people.com/crime/woman-husband-son-charged-after-security-guard-allegedly-shot-over-mask-dispute/

Bus driver beaten to death after asking passengers to wear face masks: "It's barbaric"(CBS News)
https://www.cbsnews.com/news/bus-driver-beaten-to-death-passengers-face-masks-france/
Massachusetts suspect pulls gun on maskless man outside Walgreens: cops say(Fox Newsより)
https://www.foxnews.com/us/massachusetts-suspect-pulled-gun-maskless-man-outside-walgreens-police-say